ORCID Profile
0000-0001-9849-4755
Current Organisation
University of Sydney
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Photodetectors, Optical Sensors and Solar Cells | Electrical and Electronic Engineering | Functional Materials | Materials engineering | Environmental Technologies | Nanomaterials | Functional materials | Photonics optoelectronics and optical communications | Nanomanufacturing | Nanomaterials | Glass | Nanotechnology | Microtechnology | Materials Engineering | Composite and Hybrid Materials | Nanofabrication, Growth and Self Assembly
ANZSRC Socio-Economic Objective (SEO)
Solar-Photovoltaic Energy | Expanding Knowledge in Engineering | Expanding Knowledge in the Physical Sciences | Energy Conservation and Efficiency not elsewhere classified | Expanding Knowledge in Technology | Hydrogen Production from Renewable Energy | Structural Glass and Glass Products |
Related Links
Publications
Enhanced light trapping for high efficiency crystalline solar cells by the application of rear surface plasmons
Publisher: Elsevier BV
Date: 06-2012
Performance Enhancement of Lead‐Free 2D Tin Halide Perovskite Transistors by Surface Passivation and Its Impact on Non‐Volatile Photomemory Characteristics
Publisher: Wiley
Date: 15-02-2023
Abstract: Two‐dimensional (2D) tin (Sn)‐based perovskites have recently received increasing research attention for perovskite transistor application. Although some progress is made, Sn‐based perovskites have long suffered from easy oxidation from Sn 2+ to Sn 4+ , leading to undesirable p‐doping and instability. In this study, it is demonstrated that surface passivation by phenethylammonium iodide (PEAI) and 4‐fluorophenethylammonium iodide (FPEAI) effectively passivates surface defects in 2D phenethylammonium tin iodide (PEA 2 SnI 4 ) films, increases the grain size by surface recrystallization, and p‐dopes the PEA 2 SnI 4 film to form a better energy‐level alignment with the electrodes and promote charge transport properties. As a result, the passivated devices exhibit better ambient and gate bias stability, improved photo‐response, and higher mobility, for ex le, 2.96 cm 2 V −1 s −1 for the FPEAI‐passivated films—four times higher than the control film (0.76 cm 2 V −1 s −1 ). In addition, these perovskite transistors display non‐volatile photomemory characteristics and are used as perovskite‐transistor‐based memories. Although the reduction of surface defects in perovskite films results in reduced charge retention time due to lower trap density, these passivated devices with better photoresponse and air stability show promise for future photomemory applications.
Manufacturing cost and market potential analysis of demonstrated roll-to-roll perovskite photovoltaic cell processes
Publisher: Elsevier BV
Date: 2018
Potential performance of Out-of-Sequence multi-junction solar cells: III-V on virtual Ge substrates with active Si bottom sub-cell
Publisher: IEEE
Date: 06-2015
The design of single-junction GaAs and dual-junction GaAs/Si in the presence of threading dislocation density
Publisher: IEEE
Date: 06-2015
The Impact of a Dynamic Two-Step Solution Process on Film Formation of Cs0.15 (MA0.7 FA0.3 )0.85 PbI3 Perovskite and Solar Cell Performance
Publisher: Wiley
Date: 02-2019
Abstract: This paper provides deep understanding of the formation mechanism of perovskite film fabricated by sequential solution-based methods. It compares two sequential spin-coating methods for Cs
Mobile Charge-Induced Fluorescence Intermittency in Methylammonium Lead Bromide Perovskite
Publisher: American Chemical Society (ACS)
Date: 22-06-2015
DOI: 10.1021/ACS.NANOLETT.5B01405
Abstract: Organic-inorganic halide perovskite has emerged as a very promising material for solar cells due to its excellent photovoltaic enabling properties resulting in rapid increase in device efficiency over the last 3 years. Extensive knowledge and in-depth physical understanding in the excited state carrier dynamics are urgently required. Here we investigate the fluorescence intermittency (also known as blinking) in vapor-assisted fabricated CH3NH3PbBr3 perovskite. The evident fluorescence blinking is observed in a dense CH3NH3PbBr3 perovskite film that is composed of nanoparticles in close contact with each other. In the case of an isolated nanoparticle no fluorescence blinking is observed. The "ON" probability of fluorescence is dependent on the excitation intensity and exhibits a similar power rule to semiconductor quantum dots at higher excitation intensity. As the vapor-assisted fabricated CH3NH3PbBr3 perovskite film is a cluster of nanoparticles forming a dense film, it facilitates mobile charge migration between the nanoparticles and charge accumulation at the surface or at the boundary of the nanoparticles. This leads to enhanced Auger-like nonradiative recombination contributing to the fluorescence intermittency observed. This finding provides unique insight into the charge accumulation and migration and thus is of crucial importance for device design and improvement.
Water-Free, Conductive Hole Transport Layer for Reproducible Perovskite–Perovskite Tandems with Record Fill Factor
Publisher: American Chemical Society (ACS)
Date: 16-11-2023
Impact of microstructure on the electron–hole interaction in lead halide perovskites
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7EE00685C
Abstract: The authors directly show that grain size and quality have a negligible impact on the excitonic characteristics of perovskite semiconductors.
The emergence of perovskite solar cells
Publisher: Springer Science and Business Media LLC
Date: 27-06-2014
Erratum: “Pulsed laser deposition nickel oxide on crystalline silicon as hole selective contacts” [J. Vac. Sci. Technol. B 38, 014013 (2020)]
Publisher: American Vacuum Society
Date: 14-10-2021
DOI: 10.1116/6.0001492
Hue tunable, high color saturation and high-efficiency graphene/silicon heterojunction solar cells with MgF2/ZnS double anti-reflection layer
Publisher: Elsevier BV
Date: 04-2018
Elucidating Mechanisms behind Ambient Storage-Induced Efficiency Improvements in Perovskite Solar Cells
Publisher: American Chemical Society (ACS)
Date: 15-02-2021
Results from coupled optical and electrical sentaurus TCAD models of a gallium phosphide on silicon electron carrier selective contact solar cell
Publisher: IEEE
Date: 06-2014
Polaronic exciton binding energy in iodide and bromide organic-inorganic lead halide perovskites
Publisher: AIP Publishing
Date: 07-12-2015
DOI: 10.1063/1.4936418
Abstract: The last 4 years have seen the rapid emergence of a new solar cell technology based on organic-inorganic lead halide perovskites, primarily CH3NH3PbI3 and related halides involving Cl and Br. Debate continues on the role of excitons and free carriers in these materials. Recent studies report values of exciton binding energy for the iodide ranging from 0.7 meV to 200 meV, with vastly different implications for device operation and design. In the present work, previously neglected polarons are shown likely to have a major impact in determining excitonic properties. Polaronic exciton binding energies calculated using effective longitudinal optical phonon energies, deduced from permittivity measurements, are shown consistent with experimental energies for good quality s les of CH3NH3PbI3 and CH3NH3PbBr3, as determined over a large temperature range from optical absorption data. Bandgaps determined simultaneously show a discontinuity at the orthorhombic to tetragonal phase transition for the iodide, but not for the bromide.
Advanced interface modelling of n-Si/HNO 3 doped graphene solar cells to identify pathways to high efficiency
Publisher: Elsevier BV
Date: 03-2018
Spin-coating free fabrication for highly efficient perovskite solar cells
Publisher: Elsevier BV
Date: 08-2017
The effect of rear surface passivation layer thickness on high efficiency solar cells with planar and scattering metal reflectors
Publisher: IEEE
Date: 06-2012
Optical analysis of perovskite/silicon tandem solar cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TC01276K
Abstract: A detailed optical analysis of the absorption distribution, parasitic absorption and reflection losses in various semi-transparent perovskite solar cell structures and their impact on tandem cell efficiencies is reported.
Effect of electroless nickel on the series resistance of high-efficiency inkjet printed passivated emitter rear contacted solar cells
Publisher: Elsevier BV
Date: 12-2010
The Effect of Stoichiometry on the Stability of Inorganic Cesium Lead Mixed-Halide Perovskites Solar Cells
Publisher: American Chemical Society (ACS)
Date: 31-08-2017
Deployment Opportunities for Space Photovoltaics and the Prospects for Perovskite Solar Cells
Publisher: Wiley
Date: 05-11-2021
Abstract: The rapid progress in space exploration, mining, and tourism has been fuelled by both public and private sector investments. The latter has led to the need to reduce manufacturing and launch cost of space hardware to create a competitive and sustainable space economy. A major step in making space accessible is to develop affordable power systems for “commercial space” use. Photovoltaics has in the past and will in the future be a key component. Metal halide perovskite solar cells show the greatest potential of all emerging technologies for low‐cost space photovoltaics. They have demonstrated the highest rate of power conversion efficiency improvement. Compared to the triple junction III–V compound semiconductor cells commonly used for space applications, perovskite cells have a higher power to weight ratio and are significantly cheaper to be manufactured. They have high radiation tolerance and can be fabricated onto flexible substrates for expand‐on‐demand solar panels. This paper outlines the major space markets for photovoltaics, and research and development opportunities for perovskite space solar cells in the context of their recent progress.
On the Origin of Silicon Lifetime Degradation during Anneal in III-V Material Growth Chambers
Publisher: IEEE
Date: 06-2019
Solar cell efficiency tables (version 50)
Publisher: Wiley
Date: 21-06-2017
DOI: 10.1002/PIP.2909
Maskless patterned etching of silicon dioxide by inkjet printing
Publisher: IEEE
Date: 07-2008
Optimum band gap combinations to make best use of new photovoltaic materials
Publisher: Elsevier BV
Date: 10-2016
Perovskite Solar Cells: The Birth of a New Era in Photovoltaics
Publisher: American Chemical Society (ACS)
Date: 16-03-2017
Unveiling the relationship between the perovskite precursor solution and the resulting device performance
Publisher: American Chemical Society (ACS)
Date: 04-03-2020
DOI: 10.1021/JACS.0C00411
Passivation of grain boundaries by phenethylammonium in formamidinium-methylammonium lead halide perovskite solar cells
Publisher: American Chemical Society (ACS)
Date: 13-02-2018
Acetic Acid Assisted Crystallization Strategy for High Efficiency and Long‐Term Stable Perovskite Solar Cell
Publisher: Wiley
Date: 23-01-2020
Solution-Processed Faraday Rotators Using Single Crystal Lead Halide Perovskites
Publisher: Wiley
Date: 13-02-2020
Homologous Bromides Treatment for Improving the Open-Circuit Voltage of Perovskite Solar Cells
Publisher: Wiley
Date: 19-12-2022
Abstract: The power conversion efficiency (PCE) of solution‐processed organic–inorganic mixed halide perovskite solar cells has achieved rapid improvement. However, it is imperative to minimize the voltage deficit ( W oc = E g / q − V oc ) for their PCE to approach the theoretical limit. Herein, the strategy of depositing homologous bromide salts on the perovskite surface to achieve a surface and bulk passivation for the fabrication of solar cells with high open‐circuit voltage is reported. Distinct from the conclusions given by previous works, that homologous bromides such as FABr only react with PbI 2 to form a large‐bandgap perovskite layer on top of the original perovskite, this work shows that the bromide also penetrates the perovskite film and passivates the perovskite in the bulk. This is confirmed by the small‐bandgap enlargement observed by absorbance and photoluminescence, and the bromide element ratio increasing in the bulk by time‐of‐flight secondary‐ion mass spectrometry and depth‐resolved X‐ray photoelectron spectroscopy. Furthermore, a clear suppression of non‐radiative recombination is confirmed by a variety of characterization methods. This work provides a simple and universal way to reduce the W oc of single‐junction perovskite solar cells and it will also shed light on developing other high‐performance optoelectronic devices, including perovskite‐based tandems and light‐emitting diodes.
In situ X-ray diffraction study on epitaxial growth of SixGe1−x on Si by aluminium-assisted crystallization
Publisher: Elsevier BV
Date: 02-2017
Unravelling the mechanism of photo-activated ion dynamics in organic-inorganic perovskites
Publisher: IEEE
Date: 06-2016
Flexible and efficient perovskite quantum dot solar cells via hybrid interfacial architecture
Publisher: Research Square Platform LLC
Date: 30-07-2020
DOI: 10.21203/RS.3.RS-47321/V1
Abstract: All-inorganic CsPbI3 perovskite quantum dots (QDs) have received intense research interest for photovoltaic applications because of the recently demonstrated higher power conversion efficiency compared to solar cells using other QD materials. These QD devices also exhibit good mechanical stability amongst various thin-film photovoltaic technologies. In this work, through developing a hybrid interfacial architecture consisting of CsPbI3 QD/PCBM heterojunctions, we report the formation of an energy cascade for efficient charge transfer at both QD heterointerfaces and QD/electron transport layer interfaces. The ch ion CsPbI3 QD solar cell has a best power conversion efficiency of 15.1%, which is among the highest report to date. Building on this strategy, we demonstrate the very first perovskite QD flexible solar cell with a record efficiency of 12.3%. A detailed morphological characterization reveals that the perovskite QD film can better retain structure integrity than perovskite bulk thin-film under external mechanical stress. This work is the first to demonstrate higher mechanical endurance of QD film compared to bulk thin-film, and highlights the importance of further research on high‐performance and flexible optoelectronic devices using solution-processed QDs.
A bottom‐up cost analysis of silicon–perovskite tandem photovoltaics
Publisher: Wiley
Date: 27-10-2021
DOI: 10.1002/PIP.3354
Investigating the effect of silicon thickness on ultra-thin silicon on insulator as a compliant substrate for gallium arsenide heteroepitaxial growth
Publisher: Elsevier BV
Date: 05-2018
Inorganic-Cation Pseudohalide 2D Cs2Pb(SCN)2Br2 Perovskite Single Crystal
Publisher: Wiley
Date: 21-12-2022
Abstract: Most of the reported 2D Ruddlesden–Popper (RP) lead halide perovskites with the general formula of A n +1 B n X 3 n +1 ( n = 1, 2, …) comprise layered perovskites separated by A‐site‐substituted organic spacers. To date, only a small number of X‐site‐substituted RP perovskites have been reported. Herein, the first inorganic‐cation pseudohalide 2D phase perovskite single crystal, Cs 2 Pb(SCN) 2 Br 2 , is reported. It is synthesized by the antisolvent vapor‐assisted crystallization (AVC) method at room temperature. It exhibits a standard single‐layer ( n = 1) Ruddlesden–Popper structure described in space group of Pmmn (#59) and has a small separation ( d = 1.69 Å) between the perovskite layers. The SCN − anions are found to bend the 2D Pb(SCN) 2 Br 2 framework slightly into a kite‐shaped octahedron, limiting the formation of a quasi‐2D perovskite structure ( n 1). This 2D single crystal exhibits a reversible first‐order phase transformation to 3D CsPbBr 3 ( Pm 3 m #221) at 450 K. It has a low exciton binding energy of 160 meV—one of the lowest for 2D perovskites ( n = 1). A Cs 2 Pb(SCN) 2 Br 2 ‐single‐crystal photodetector is demonstrated with respectable responsivity of 8.46 mA W −1 and detectivity of ≈1.2 × 10 10 Jones at a low bias voltage of 0.5 V.
The Effect of 4-tert-Butylpyridine Removal on Efficiency and Thermal Stability in Perovskite Solar Cells
Publisher: Technical Association of Photopolymers, Japan
Date: 24-06-2019
Supercharging Silicon Solar Cell Performance by Means of Multijunction Concept
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2015
Molecular engineering of hole-selective layer for high band gap perovskites for highly efficient and stable perovskite-silicon tandem solar cells
Publisher: Elsevier BV
Date: 10-2023
Grain quality engineering for organic metal halide perovskites using mixed antisolvent spraying treatment
Publisher: Wiley
Date: 19-11-2020
Dynamic study of the light soaking effect on perovskite solar cells by in-situ photoluminescence microscopy
Publisher: Elsevier BV
Date: 04-2018
Solar cell efficiency tables (Version 55)
Publisher: Wiley
Date: 20-12-2019
DOI: 10.1002/PIP.3228
Solar cell efficiency tables (Version 53)
Publisher: Wiley
Date: 25-12-2018
DOI: 10.1002/PIP.3102
A “smart stack” triple-junction cell consisting of InGaP/GaAs and crystalline Si
Publisher: IEEE
Date: 06-2016
Scalable ways to break the efficiency limit of single-junction solar cells
Publisher: AIP Publishing
Date: 03-01-2022
DOI: 10.1063/5.0081049
Immediate and Temporal Enhancement of Power Conversion Efficiency in Surface-Passivated Perovskite Solar Cells
Publisher: American Chemical Society (ACS)
Date: 11-08-2021
Luminescence imaging characterization of perovskite solar cells
Publisher: Wiley
Date: 26-01-2018
Abstract: In this essay, the authors use two properly encapsulated high‐efficiency mesoscopic perovskite solar cells (PSCs), which use a state‐of‐the‐art perovskite composition (HC(NH 2 ) 2 PbI 3 ) 0.85 (CH 3 NH 3 PbBr 3 ) 0.15 with excess PbI 2 as the active layer, to demonstrate the potential effect of dynamical electroluminescence responses on the analysis and interpretation of PSCs electrical characteristic. The essay does not aim to determine how to overcome this issue, nor to investigate its physical/chemical origin, although tentative propositions are made but rather, to warn researchers in the field about the interpretation and reporting the results obtained from luminescence imaging measurements and the effect of image collection timing on the results. This is a critical message since the authors predict that luminescence imaging techniques will soon become one of the key tools for PSCs characterization, both for long‐term stability assessment and fabrication process optimization.
Large-Area 23%-Efficient Monolithic Perovskite/Homojunction-Silicon Tandem Solar Cell with Enhanced UV Stability Using Down-Shifting Material
Publisher: American Chemical Society (ACS)
Date: 08-10-2019
Methylammonium Lead Bromide Perovskite-Based Solar Cells by Vapor-Assisted Deposition
Publisher: American Chemical Society (ACS)
Date: 10-02-2015
DOI: 10.1021/JP512936Z
Optical Properties of Photovoltaic Organic–Inorganic Lead Halide Perovskites
Publisher: American Chemical Society (ACS)
Date: 18-11-2015
DOI: 10.1021/ACS.JPCLETT.5B01865
Abstract: Over the last several years, organic-inorganic lead halide perovskites have rapidly emerged as a new photovoltaic contender. Although energy conversion efficiency above 20% has now been certified, improved understanding of the material properties contributing to these high performance levels may allow the progression to even higher efficiency, stable cells. The optical properties of these new materials are important not only to device design but also because of the insight they provide into less directly accessible properties, including energy-band structures, binding energies, and likely impact of excitons, as well as into absorption and inverse radiative recombination processes.
Visualizing the Impact of Light Soaking on Morphological Domains in an Operational Cesium Lead Halide Perovskite Solar Cell
Publisher: American Chemical Society (ACS)
Date: 12-12-2019
DOI: 10.1021/ACS.JPCLETT.9B03210
Abstract: The dynamics of photogenerated carriers and mobile ions in operational cesium lead halide (CsPbI
Gas chromatography–mass spectrometry analyses of encapsulated stable perovskite solar cells
Publisher: American Association for the Advancement of Science (AAAS)
Date: 19-06-2020
Abstract: Solar cells are subject to heating when operating in sunlight, and the organic components of hybrid perovskite solar cells, especially the commonly used methylammonium cation, can undergo thermal decomposition. Encapsulation can limit decomposition by bringing such reactions to equilibrium and can prevent exposure to damaging ambient moisture. Shi et al. examined several encapsulation schemes for perovskite films and devices by probing volatile products with gas chromatography–mass spectrometry (see the Perspective by Juarez-Perez and Haro). Pressure-tight polymer/glass stack encapsulation was effective in suppressing gas transfer and allowed solar cells containing methylammonium to pass harsh moisture and thermal cycling tests. Science , this issue p. eaba2412 see also p. 1309
Research priorities for COVID-19 sensor technology
Publisher: Springer Science and Business Media LLC
Date: 18-01-2021
Ultrafast charge generation and relaxation dynamics in methylammonium lead bromide perovskites
Publisher: SPIE
Date: 22-12-2015
DOI: 10.1117/12.2202330
Utilization of Direct and Diffuse Sunlight in a Dye-Sensitized Solar Cell — Silicon Photovoltaic Hybrid Concentrator System
Publisher: American Chemical Society (ACS)
Date: 28-02-2011
DOI: 10.1021/JZ200112M
Correction to: High Efficiency Perovskite-Silicon Tandem Solar Cells: Effect of Surface Coating versus Bulk Incorporation of 2D Perovskite (Advanced Energy Materials, (2020), 10, 9, (1903553), 10.1002/aenm.201903553)
Publisher: Wiley
Date: 08-2020
Optical probe ion and carrier dynamics at the CH3NH3PbI3 interface with electron and hole transport materials
Publisher: Wiley
Date: 13-10-2016
Charge carrier transport properties of twin domains in halide perovskites
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TA02565A
Abstract: Our study highlights importance elements of the nanoscale intragrain feature that may pave the way to high-efficiency perovskite solar cells.
Fabrication of Efficient and Stable CsPbI 3 Perovskite Solar Cells through Cation Exchange Process
Publisher: Wiley
Date: 16-08-2019
Lessons Learnt from Spatially Resolved Electro- and Photoluminescence Imaging: Interfacial Delamination in CH3 NH3 PbI3 Planar Perovskite Solar Cells upon Illumination
Publisher: Wiley
Date: 21-12-2017
Progress and Opportunities for Cs Incorporated Perovskite Photovoltaics
Publisher: Elsevier BV
Date: 07-2020
Morphology and carrier extraction study of organic-inorganic metal halide perovskite by one- and two-photon fluorescence microscopy
Publisher: American Chemical Society (ACS)
Date: 22-10-2014
DOI: 10.1021/JZ502014R
Abstract: The past two years have seen the uniquely rapid emergence of a new class of solar-cell-based on mixed organic-inorganic halide perovskite. In this work, we demonstrate a promising technique for studying the morphology of perovskite and its impact on carrier extraction by carrier transport layer using one-photon and two-photon fluorescence imaging in conjunction with time-resolved photoluminescence. This technique is not only effective in separating surface and bulk effects but it also allows the determination of lifetimes in localized regions and local carrier extraction efficiency. The difference in sensitivities of transport materials to grain boundaries and film uniformity is highlighted in this study. It is shown that the PCBM fabricated in this work is more sensitive to film nonuniformity, whereas spiro-OMeTAD is more sensitive to grain boundaries in terms of effective carrier extraction.
Nucleation and growth control of HC(NH2)2PbI3 for planar perovskite solar cell
Publisher: American Chemical Society (ACS)
Date: 16-05-2016
Simulation of Solar Cells Employing 2 Dimensional Transition Metal Dichalcogenide - Silicon Front Surfaces
Publisher: IEEE
Date: 06-2018
Review of novel passivation techniques for efficient and stable perovskite solar cells
Publisher: Wiley
Date: 25-02-2019
Consensus statement: Standardized reporting of power-producing luminescent solar concentrator performance
Publisher: Elsevier BV
Date: 2022
Thermal‐Radiation‐Driven Ultrafast Crystallization of Perovskite Films Under Heavy Humidity for Efficient Inverted Solar Cells
Publisher: Wiley
Date: 19-08-2022
Abstract: Fabricating perovskite solar cells (PSCs) in air is conducive to low‐cost commercial production nevertheless, it is rather difficult to achieve comparable device performance as that in an inert atmosphere because of the poor moisture toleration of perovskite materials. Here, the perovskite crystallization process is systematically studied using two‐step sequential solution deposition in an inert atmosphere (glovebox) and air. It is found that moisture can stabilize solvation intermediates and prevent their conversion into perovskite crystals. To address this issue, thermal radiation is used to accelerate perovskite crystallization for integrated perovskite films within 10 s in air. The as‐formed perovskite films are compact, highly oriented with giant grain size, superior photoelectric properties, and low trap density. When the films are applied to PSC devices, a ch ion power conversion efficiency (PCE) of 20.8% is obtained, one of the best results for air‐processed inverted PSCs under high relative humidity (60 ± 10%). This work substantially assists understanding and modulation to perovskite crystallization kinetics under heavy humidity. Also, the ultrafast conversion strategy by thermal radiation provides unprecedented opportunities to manufacture high‐quality perovskite films for low‐temperature, eco‐friendly, and air‐processed efficient inverted PSCs.
Ideal GaP/Si heterostructures grown by MOCVD: III-V/active-Si subcells, multijuntions, and MBE-to-MOCVD III-V/Si interface science
Publisher: IEEE
Date: 06-2013
The Legality and Signification of the AGF’s Directive Approving a Second Musical CMO in Nigeria
Publisher: Springer Science and Business Media LLC
Date: 13-11-2018
Correction: Balancing electrical and optical losses for efficient 4-terminal Si-perovskite solar cells with solution processed percolation electrodes
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA90069H
Abstract: Correction for ‘Balancing electrical and optical losses for efficient 4-terminal Si-perovskite solar cells with solution processed percolation electrodes’ by César Omar Ramírez Quiroz et al. , J. Mater. Chem. A , 2018, 6 , 3583–3592.
Low-temperature epitaxial growth of Ge on Si, towards a cost-effective substrate for III-V solar cells
Publisher: IEEE
Date: 06-2018
Effect of pressing pressure on the performance of perovskite solar cells
Publisher: American Chemical Society (ACS)
Date: 19-03-2019
Accelerated Lifetime Testing of Organic–Inorganic Perovskite Solar Cells Encapsulated by Polyisobutylene
Publisher: American Chemical Society (ACS)
Date: 24-07-2017
Abstract: Metal halide perovskite solar cells (PSCs) have undergone rapid progress. However, unstable performance caused by sensitivity to environmental moisture and high temperature is a major impediment to commercialization of PSCs. In the present work, a low-temperature, glass-glass encapsulation technique using high performance polyisobutylene (PIB) as the moisture barrier is investigated on planar glass/FTO/TiO
Defect trapping states and charge carrier recombination in organic–inorganic halide perovskites
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TC03109E
Abstract: The defect density and relaxation rate in organic–inorganic perovskites dominate the carrier recombination dynamics and thus PL intensity exhibits super-linear increase with increasing excitation.
Application of polydimethylsiloxane surface texturing on III-V//Si tandem achieving more than 2 % absolute efficiency improvement
Publisher: Optica Publishing Group
Date: 28-01-2020
DOI: 10.1364/OE.380972
Abstract: Silicon based multi-junction solar cells are a promising approach for achieving high power conversion efficiencies using relatively low-cost substrates. In recent years, 2-terminal triple-junction solar cells using GaInP/GaAs as top cells and Si bottom cell have achieved excellent efficiencies. Epitaxial growth or wafer bonding has been used for the integration of the cells. This requires the top surface of the Si cell to be polished for effective integration, sacrificing the light trapping in the Si cell. The poor long wavelength light absorption in silicon limits the tandem cell efficiency as it is limited by current mismatch. In this work, for the first time, an external surface texturing is attached onto a GaInP/GaAs//Si wafer bonded triple-junction solar cell, using polydimethylsiloxane (PDMS) layers with surface geometries replicated from various pyramidally-textured silicon wafers. With reduced reflection, the short circuit current density is increased by 0.95 mA/cm 2 , while the overall cell efficiency is boosted by more than 2 % absolute.
Four-Terminal Tandem Solar Cells Using CH3 NH3 PbBr3 by Spectrum Splitting
Publisher: American Chemical Society (ACS)
Date: 17-09-2015
DOI: 10.1021/ACS.JPCLETT.5B01608
Abstract: In this work, the use of a high bandgap perovskite solar cell in a spectrum splitting system is demonstrated. A remarkable energy conversion efficiency of 23.4% is achieved when a CH3NH3PbBr3 solar cell is coupled with a 22.7% efficient silicon passivated emitter rear locally diffused solar cell. Relative enhancements of >10% are demonstrated by CH3NH3PbBr3/CH3NH3PbI3 and CH3NH3PbBr3/multicrystalline-screen-printed-Si spectral splitting systems with tandem efficiencies of 13.4% and 18.8%, respectively. The former is the first demonstration of an all perovskite split spectrum system. The CH3NH3PbBr3 cell on a mesoporous structure was fabricated by the vapor-assisted method while the planar CH3NH3PbI3 cell was fabricated by the gas-assisted method. This work demonstrates the advantage of the higher voltage output from the high bandgap CH3NH3PbBr3 cell and its suitability in a tandem system.
Scaling limits to large area perovskite solar cell efficiency
Publisher: Wiley
Date: 23-07-2018
DOI: 10.1002/PIP.3035
Cation‐Diffusion‐Based Simultaneous Bulk and Surface Passivations for High Bandgap Inverted Perovskite Solar Cell Producing Record Fill Factor and Efficiency
Publisher: Wiley
Date: 02-08-2022
Abstract: High bandgap perovskite solar cells are integral to perovskite‐based multi‐junction tandem solar cells with efficiency potentials over 40%. However, at present, high bandgap perovskite devices underperform compared to their mid bandgap counterparts in terms of voltage outputs and fill factors resulting in lower than ideal efficiencies. Here, the low fill factor aspect of high bandgap perovskite is addressed by developing a cation‐diffusion‐based double‐sided interface passivation scheme that simultaneously provides bulk passivation for a 1.75 eV perovskite cell that is also compatible with a p‐i‐n cell architecture. The ch ion cell achieves a record fill factor of 86.5% and a power conversion efficiency of 20.2%. Results of ionic distribution profiling, Fourier transform infrared spectroscopy, and X‐ray diffraction crystallography reveal evidence of cation diffusion from the surface perovskite passivation layer into bulk. The diffused cations reduce Shockley–Read–Hall recombination in the perovskite bulk and at the surfaces with the latter being more dominant as confirmed by light‐intensity dependent and temperature‐dependent open‐circuit voltage measurements as well as thermal admittance spectroscopy. This concurrent bulk and surface passivation scheme renders record fill factor and efficiency in the double‐side passivated cells. This provides new insights for future passivation strategies based on ionic diffusion of functionalized materials.
Optical modelling data for room temperature optical properties of organic–inorganic lead halide perovskites
Publisher: Elsevier BV
Date: 06-2015
Angular reflection study to reduce plasmonic losses in the dielectrically displaced back reflectors of silicon solar cells
Publisher: Elsevier BV
Date: 10-2013
General design considerations for making optimal use of new photovoltaic materials
Publisher: IEEE
Date: 06-2015
Humidity-Induced Degradation via Grain Boundaries of HC(NH2 )2 PbI3 Planar Perovskite Solar Cells
Publisher: Wiley
Date: 17-01-2018
Solar cell efficiency tables (version 51)
Publisher: Wiley
Date: 14-12-2017
DOI: 10.1002/PIP.2978
Dislocation density reduction of virtual Ge substrates by CW diode laser treatment
Publisher: IEEE
Date: 06-2016
Solar cell efficiency tables (version 49)
Publisher: Wiley
Date: 28-11-2016
DOI: 10.1002/PIP.2855
Solar‐Driven Co‐Production of Hydrogen and Value‐Add Conductive Polyaniline Polymer
Publisher: Wiley
Date: 20-09-2022
Abstract: To reduce the reliance on fossil fuel, H 2 , as a clean fuel, has attracted substantial research and development activities in recent years. The traditional water splitting approach requires an applied bias of more than 1.5 V and the use of ion‐selective membranes to prevent the formation of a potentially explosive H 2 –O 2 gas mixture, resulting in increased cost and system design complexity. Here, a solar‐driven H 2 production process requiring a much lower applied bias of 1.05 V is reported whereby aniline (ANI) is oxidized to polyaniline (PANI) at the anode with a yield of 96% and H 2 evolution reaction occurs at the cathode with a faradaic efficiency of 98.6 ± 3.9%. The process has multiple advantages including the elimination of ion‐exchange membrane as PANI is a solid product that also is of substantially higher value than O 2 . For demonstration, a single junction perovskite solar cell and low‐cost earth abundant CoP catalyst are successfully applied for this process. This process contributes to the advancement of solar‐driven low‐cost H 2 generation coupled with co‐production of a high‐value product expediting the transition to a hydrogen economy.
Reconsideration of the gallium nitride
Publisher: Elsevier BV
Date: 09-2019
Implied Open‐circuit Voltage Imaging via a Single Bandpass Filter Method—Its First Application in Perovskite Solar Cells
Publisher: Wiley
Date: 18-11-2022
Abstract: A novel, camera‐based method for direct implied open‐circuit voltage (i V OC ) imaging via the use of a single bandpass filter (s‐BPF) is developed for large‐area photovoltaic solar cells and precursors. The photoluminescence (PL) emission is imaged using a narrow BPF with centre energy inside the high‐energy tail of the PL emission, utilising the close‐to‐unity and nearly constant absorptivity of typical photovoltaic devices in this energy range. As a result, the exact value of the s le's absorptivity within the BPF transmission band is not required. The use of an s‐BPF enables a fully contactless approach to calibrate the absolute PL photon flux for spectrally integrated detectors, including cameras. The method eliminates the need for knowledge of the imaging system spectral response. Through an appropriate choice of the BPF centre energy, a range of absorber compositions or a single absorber with different surface morphologies, such as planar and textured, can be imaged, all without the need for additional detection optics. The feasibility of this s‐BPF method is first validated. The relative error in i V OC is determined to be ≤1.5%. The method is then demonstrated on device stacks with two different perovskite compositions commonly used in single‐junction and monolithic tandem solar cells.
Perovskites cover silicon textures
Publisher: Springer Science and Business Media LLC
Date: 11-06-2018
Design of bottom silicon solar cell for multijunction devices
Publisher: IEEE
Date: 06-2013
One-step aluminium-assisted crystallization of Ge epitaxy on Si by magnetron sputtering
Publisher: AIP Publishing
Date: 03-02-2014
DOI: 10.1063/1.4864463
Abstract: In this work, one-step aluminium-assisted crystallization of Ge on Si is achieved via magnetron sputtering by applying an in-situ low temperature (50 °C to 150 °C) heat treatment in between Al and Ge depositions. The effect of heat treatment on film properties and the growth mechanism of Ge epitaxy on Si are studied via X-ray diffraction, Raman and transmission electron microscopy analyses. Compared with the conventional two-step process, the one-step aluminium-assisted crystallization requires much lower thermal budget and results in pure Ge epitaxial layer, which may be suitable for use as a virtual substrate for the fabrication of III-V solar cells.
Correction to “Strontium-Doped Low-Temperature-Processed CsPbI2Br Perovskite Solar Cells”
Publisher: American Chemical Society (ACS)
Date: 02-05-2019
Cyclic thermal annealing on Ge/Si(100) epitaxial films grown by magnetron sputtering
Publisher: Elsevier BV
Date: 2015
Electro- and photoluminescence imaging as fast screening technique of the layer uniformity and device degradation in planar perovskite solar cells (vol 120, 035702, 2016)
Publisher: AIP Publishing
Date: 16-09-2016
DOI: 10.1063/1.4960763
Large area efficient interface layer free monolithic perovskite/homo-junction-silicon tandem solar cell with over 20% efficiency
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8EE00689J
Abstract: A simple and scalable interface-layer free monolithic perovskite/silicon tandem has been demonstrated achieving over 20% efficiency on a large area.
Ultimate efficiency limit of single-junction perovskite and dual-junction perovskite/silicon two-terminal devices
Publisher: IOP Publishing
Date: 07-2015
Abstract: Theoretical calculation based on detailed balance and incorporating different realistic optical and electrical losses predicts conversion efficiency beyond 22% for single-junction perovskite devices. In dual-junction perovskite/silicon devices, theoretical conversion efficiency around 40% is been determined. However, dramatic drop in the conversion efficiency is shown to be due to the glass reflection and FTO parasitic absorption losses. Additionally, practical conversion efficiency limits of dual-junction two-terminal perovskite/silicon tandem solar cell of 30% are achievable as reported in this work using state-of-the-art demonstrated devices. Additionally, various crystalline silicon (industry and laboratory demonstrated) technologies are used as the bottom cell for the current matched tandem cell stacks with higher relative improvements when using commercial c-Si solar cells. Moreover, the effect of eliminating the parasitic resistances and enhancing the external radiative efficiency (ERE) in the perovskite junction on tandem performance are also investigated enhancing the stack efficiencies.
Diode laser annealing on Ge/Si (100) epitaxial films grown by magnetron sputtering
Publisher: Elsevier BV
Date: 06-2016
Device Performance of Emerging Photovoltaic Materials (Version 3)
Publisher: Wiley
Date: 09-12-2022
Abstract: Following the 2nd release of the “Emerging PV reports,” the best achievements in the performance of emerging photovoltaic devices in erse emerging photovoltaic research subjects are summarized, as reported in peer‐reviewed articles in academic journals since August 2021. Updated graphs, tables, and analyses are provided with several performance parameters, e.g., power conversion efficiency, open‐circuit voltage, short‐circuit current density, fill factor, light utilization efficiency, and stability test energy yield. These parameters are presented as a function of the photovoltaic bandgap energy and the average visible transmittance for each technology and application, and are put into perspective using, e.g., the detailed balance efficiency limit. The 3rd installment of the “Emerging PV reports” extends the scope toward triple junction solar cells.
High-Efficiency Rubidium-Incorporated Perovskite Solar Cells by Gas Quenching
Publisher: American Chemical Society (ACS)
Date: 24-01-2017
Temperature dependent optical properties of CH3NH3PbI3 perovskite by spectroscopic ellipsometry
Publisher: AIP Publishing
Date: 08-02-2016
DOI: 10.1063/1.4941710
Abstract: Mixed organic-inorganic halide perovskites have emerged as a promising new class of semiconductors for photovoltaics with excellent light harvesting properties. Thorough understanding of the optical properties of these materials is important for photovoltaic device optimization and the insight this provides for the knowledge of energy band structures. Here we present an investigation of the sub-room temperature dependent optical properties of polycrystalline thin films of CH3NH3PbI3 perovskites that are of increasing interest for photovoltaics. The complex dielectric function of CH3NH3PbI3 in the energy range of 0.5–4.1 eV is determined between 77 K and 297 K using spectroscopic ellipsometry. An increase in optical permittivity as the temperature decreases is illustrated for CH3NH3PbI3. Optical transitions and critical points were analyzed using the energy dependent second derivative of these dielectric functions as a function of temperature.
Efficient monolithic perovskite–Si tandem solar cells enabled by an ultra-thin indium tin oxide interlayer
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2EE04007G
Abstract: An ultra-thin indium tin oxide interlayer design was developed for interfacing perovskite solar cells with Si solar cells thereby minimising shunting effects for large area monolithic tandem devices.
Solar cell efficiency tables (version 54)
Publisher: Wiley
Date: 20-06-2019
DOI: 10.1002/PIP.3171
Photoluminescence characterisations of a dynamic aging process of organic–inorganic CH3NH3PbBr3perovskite
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5NR07993D
Abstract: PL decay traces (left) and fluorescence lifetime imaging microscopy (FLIM) image (right) of 2 weeks air stored perovskite film.
Effects of Al thickness on one-step aluminium-assisted crystallization of Ge epitaxy on Si by magnetron sputtering
Publisher: Elsevier BV
Date: 12-2017
Epitaxial growth of single-crystalline silicon–germanium on silicon by aluminium-assisted crystallization
Publisher: Elsevier BV
Date: 2014
A life cycle assessment of perovskite/silicon tandem solar cells
Publisher: Wiley
Date: 02-03-2017
DOI: 10.1002/PIP.2877
Untapped Potentials of Inorganic Metal Halide Perovskite Solar Cells
Publisher: Elsevier BV
Date: 04-2019
Pulsed Laser Deposition Nickel Oxide on crystalline Silicon as hole selective contacts
Publisher: IEEE
Date: 06-2018
Hole Transport Layer Free Inorganic CsPbIBr2 Perovskite Solar Cell by Dual Source Thermal Evaporation
Publisher: Wiley
Date: 02-02-2016
A manufacturing cost estimation method with uncertainty analysis and its application to perovskite on glass photovoltaic modules
Publisher: Wiley
Date: 24-02-2017
DOI: 10.1002/PIP.2871
CsPbIBr2 Perovskite Solar Cell by Spray-Assisted Deposition
Publisher: American Chemical Society (ACS)
Date: 22-08-2016
Solar cell efficiency tables (version 52)
Publisher: Wiley
Date: 19-06-2018
DOI: 10.1002/PIP.3040
23.4% monolithic epitaxial GaAsP/Si tandem solar cells and quantification of losses from threading dislocations
Publisher: Elsevier BV
Date: 09-2021
Pushing to the Limit: Radiative Efficiencies of Recent Mainstream and Emerging Solar Cells
Publisher: American Chemical Society (ACS)
Date: 20-06-2019
A Review on Halide Perovskite Film Formation by Sequential Solution Processing for Solar Cell Applications
Publisher: Wiley
Date: 27-11-2020
Abstract: Perovskite solar cell performance is closely related to the quality of the perovskite absorbing layer which is highly dependent on deposition processes. Sequential process is shown to be effective in fabricating both single‐junction and tandem solar cells delivering comparable efficiencies compared with devices by a single‐step process. Sequence processes exhibit the benefits of controlling crystallization speed, overcoming solvent incompatibility, and greater flexibility. Here, mechanisms of film formation in two common sequential solution processes, namely chemical bath deposition and sequential spin coating, showing that film formation is highly dependent on precursors or deposition conditions, are reviewed. Herein, further review is conducted on how three main strategies improve perovskite crystallization. The first is by PbI 2 complex formation or via intramolecular exchange which is shown to result in a better perovskite conversion and a more ordered perovskite growth. The second strategy is by changing the condition of perovskite precursors, e.g., by solvent, cation, halide, and additive engineering. The last strategy is by altering precursor dispensing conditions and adding vapor or solvent annealing, thereby affecting reaction conditions. Many of these strategies are demonstrated to improve perovskite film morphology with reduced defects.
Benefit of grain boundaries in organic-inorganic halide planar perovskite solar cells
Publisher: American Chemical Society (ACS)
Date: 24-02-2015
DOI: 10.1021/ACS.JPCLETT.5B00182
Abstract: The past 2 years have seen the uniquely rapid emergence of a new class of solar cell based on mixed organic-inorganic halide perovskite. Grain boundaries are present in polycrystalline thin film solar cell, and they play an important role that could be benign or detrimental to solar-cell performance. Here we present efficient charge separation and collection at the grain boundaries measured by KPFM and c-AFM in CH3NH3PbI3 film in a CH3NH3PbI3/TiO2/FTO/glass heterojunction structure. We observe the presence of a potential barrier along the grain boundaries under dark conditions and higher photovoltage along the grain boundaries compare to grain interior under the illumination. Also, c-AFM measurement presents higher short-circuit current collection near grain boundaries, confirming the beneficial roles grain boundaries play in collecting carriers efficiently.
Light Illumination Induced Photoluminescence Enhancement and Quenching in Lead Halide Perovskite
Publisher: Wiley
Date: 14-11-2017
The ultimate efficiency of organolead halide perovskite solar cells limited by Auger processes
Publisher: Springer Science and Business Media LLC
Date: 14-06-2016
DOI: 10.1557/JMR.2016.214
Posttraumatic Stress Disorder in Primary Care: A Study of General Practices in England
Publisher: Springer Science and Business Media LLC
Date: 26-06-2020
Enhancing stability for organic-inorganic perovskite solar cells by atomic layer deposited Al2O3 encapsulation
Publisher: Elsevier BV
Date: 12-2018
21.8% Efficient Monolithic Perovskite/Homo-Junction-Silicon Tandem Solar Cell on 16 cm2
Publisher: American Chemical Society (ACS)
Date: 31-08-2018
Electrode Design to Overcome Substrate Transparency Limitations for Highly Efficient 1 cm2 Mesoscopic Perovskite Solar Cells
Publisher: Elsevier BV
Date: 12-2018
Fabrication of low-defect Ge-rich SiGe-on-insulator by continuous-wave diode laser-induced recrystallization
Publisher: Elsevier BV
Date: 05-2018
New education opportunities and research activities at UNSW
Publisher: SPIE
Date: 29-11-2008
DOI: 10.1117/12.747674
Broadband Reflectance Reduction for Wafer Bonded III-V//Si tandem Cell Using Polydimethylsiloxane -Replicated Surface Texturing
Publisher: IEEE
Date: 06-2018
Recent Advances in GaAsP/Si Top Cell Enabling 27% Tandem Efficiency
Publisher: IEEE
Date: 20-06-2021
Superior Self‐Charged and ‐Powered Chemical Sensing with High Performance for NO2 Detection at Room Temperature
Publisher: Wiley
Date: 29-03-2020
Beneficial effects of PbI2 incorporated in organo-lead halide perovskite solar cells
Publisher: Wiley
Date: 03-12-2016
Recent progress in layered metal halide perovskites for solar cells, photodetectors, and field-effect transistors
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2NR06496K
Abstract: Metal halide perovskite materials demonstrate immense potential for photovoltaic and electronic applications.
The importance of total hemispherical emittance in evaluating performance of building-integrated silicon and perovskite solar cells in insulated glazings
Publisher: Elsevier BV
Date: 10-2020
Input Parameters for the Simulation of Silicon Solar Cells in 2014
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2015
Enhanced performance: Via partial lead replacement with calcium for a CsPbI3 perovskite solar cell exceeding 13% power conversion efficiency
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7TA11154A
Abstract: Partial replacement of Pb in CsPbI 3 perovskite solar cells with Ca enhances power conversion efficiency to 13.5% under reverse scan (stabilised at 13.3%), without sacrificing stability.
Light-activated inorganic CsPbBr2I perovskite for room-temperature self-powered chemical sensing
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CP03059J
Abstract: Halide perovskite materials are excellent light harvesters that have generated enormous interest for photovoltaic technology and an increasing number of other optoelectronic applications.
Device Performance of Emerging Photovoltaic Materials (Version 2)
Publisher: Wiley
Date: 11-11-2021
Abstract: Following the 1st release of the “Emerging photovoltaic (PV) reports” , the best achievements in the performance of emerging photovoltaic devices in erse emerging photovoltaic research subjects are summarized, as reported in peer‐reviewed articles in academic journals since August 2020. Updated graphs, tables, and analyses are provided with several performance parameters, e.g., power conversion efficiency, open‐circuit voltage, short‐circuit current density, fill factor, light utilization efficiency, and stability test energy yield. These parameters are presented as a function of the photovoltaic bandgap energy and the average visible transmittance for each technology and application and are put into perspective using, e.g., the detailed balance efficiency limit. The 2nd instalment of the “Emerging PV reports” extends the scope toward tandem solar cells and presents the current state‐of‐the‐art in tandem solar cell performance for various material combinations.
Strontium-Doped Low-Temperature-Processed CsPbI2 Br Perovskite Solar Cells
Publisher: American Chemical Society (ACS)
Date: 11-09-2017
Forty three per cent composite split-spectrum concentrator solar cell efficiency
Publisher: Wiley
Date: 29-12-2009
DOI: 10.1002/PIP.924
An effective method of predicting perovskite solar cell lifetime–Case study on planar CH3NH3PbI3 and HC(NH2)2PbI3 perovskite solar cells and hole transfer materials of spiro-OMeTAD and PTAA
Publisher: Elsevier BV
Date: 04-2017
Spectral dependence of direct and trap-mediated recombination processes in lead halide perovskites using time resolved microwave conductivity
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CP07360J
Abstract: Elucidating the decay mechanisms of photoexcited charge carriers is key to improving the efficiency of solar cells based on organo-lead halide perovskites.
Diode laser annealing of epitaxy Ge on sapphire (0 0 0 1) grown by magnetron sputtering
Publisher: Elsevier BV
Date: 12-2017
Electric field induced reversible and irreversible photoluminescence responses in methylammonium lead iodide perovskite
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TC03206K
Abstract: Both reversible and irreversible PL responses can be induced by an electric field and establish a negative feedback.
Correction to “Morphology and Carrier Extraction Study of Organic–Inorganic Metal Halide Perovskite by One- and Two-Photon Fluorescence Microscopy”
Publisher: American Chemical Society (ACS)
Date: 06-11-2014
DOI: 10.1021/JZ5023398
Laser-induced aluminium-assisted crystallization of Ge-rich SixGe1-x epitaxy on Si
Publisher: Elsevier BV
Date: 06-2019
Magnetic optical rotary dispersion and magnetic circular dichroism in methylammonium lead halide perovskites
Publisher: Wiley
Date: 31-08-2021
DOI: 10.1002/CHIR.23346
Abstract: Large magnetic optical rotary dispersion (Faraday rotation) has been demonstrated recently in methylammonium lead bromide. Here, we investigate the prospect of extending the active spectral range by altering the halogen. We also investigate the origins of large Faraday rotation in these diamagnetic materials using magnetic circular dichroism (MCD) spectroscopy and the Kramers–Kronig relations. We find that, while MAPbCl 3 (MA = methylammonium) single crystals exhibit a large Verdet constant in the blue, no appreciable Faraday rotation is observed in the red/near infra‐red for MAPbI 3 single crystals. However, in all film s les, we find clear evidence of large MCD resulting from the Zeeman splitting of the highly resonant 1s exciton state. Our Kramers–Kronig calculations of Faraday rotation based on MCD data matches well with the dispersion of our experimental data for MAPbCl 3 and MAPbBr 3 , with some deviation in magnitude—demonstrating the excitonic nature of Faraday rotation in these materials. However, our calculations predict significant Faraday rotation in MAPbI 3 , contrary to our experimental results, indicating a potential discrepancy between the properties of the thin film and single crystal.
Perovskite solar cells for building integrated photovoltaics—glazing applications
Publisher: Elsevier BV
Date: 07-2022
Flexible and efficient perovskite quantum dot solar cells via hybrid interfacial architecture
Publisher: Springer Science and Business Media LLC
Date: 20-01-2021
DOI: 10.1038/S41467-020-20749-1
Abstract: All-inorganic CsPbI 3 perovskite quantum dots have received substantial research interest for photovoltaic applications because of higher efficiency compared to solar cells using other quantum dots materials and the various exciting properties that perovskites have to offer. These quantum dot devices also exhibit good mechanical stability amongst various thin-film photovoltaic technologies. We demonstrate higher mechanical endurance of quantum dot films compared to bulk thin film and highlight the importance of further research on high-performance and flexible optoelectronic devices using nanoscale grains as an advantage. Specifically, we develop a hybrid interfacial architecture consisting of CsPbI 3 quantum dot/PCBM heterojunction, enabling an energy cascade for efficient charge transfer and mechanical adhesion. The ch ion CsPbI 3 quantum dot solar cell has an efficiency of 15.1% (stabilized power output of 14.61%), which is among the highest report to date. Building on this strategy, we further demonstrate a highest efficiency of 12.3% in flexible quantum dot photovoltaics.
Illumination dependent carrier dynamics of CH3NH3PbBr3perovskite
Publisher: SPIE
Date: 22-12-2015
DOI: 10.1117/12.2202176
Device Performance of Emerging Photovoltaic Materials (Version 1)
Publisher: Wiley
Date: 04-12-2020
Monolithic Wide Band Gap Perovskite/Perovskite Tandem Solar Cells with Organic Recombination Layers
Publisher: American Chemical Society (ACS)
Date: 06-12-2017
Corrigendum to “Optimum band gap combinations to make best use of new photovoltaic materials” [Solar Energy 135 (2016) 750–757] (S0038092X16302237) (10.1016/j.solener.2016.06.042)
Publisher: Elsevier BV
Date: 07-2017
Reduction of Threading Dislocation Density in Sputtered Ge/Si(100) Epitaxial Films by Continuous-Wave Diode Laser-Induced Recrystallization
Publisher: American Chemical Society (ACS)
Date: 27-04-2018
Efficient and Stable Wide Bandgap Perovskite Solar Cells through Surface Passivation with Long Alkyl Chain Organic Cations
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA05699A
Abstract: Bromide-containing long alkylammonium chain organic cations effectly passivate defects on 1.72 eV perovskite film surfaces and greatly enhance both the performance and stability of perovskite solar cells.
Critical role of grain boundaries for ion migration in formamidinium and methylammonium lead halide perovskite solar cells
Publisher: Wiley
Date: 27-05-2016
Thermodynamic Interpretation of the Meyer-Neldel Rule Explains Temperature Dependence of Ion Diffusion in Silicate Glass
Publisher: American Physical Society (APS)
Date: 21-10-2022
Direct Determination of Total Hemispherical Emittance of Perovskite and Silicon Solar Cells
Publisher: Elsevier BV
Date: 2020
Silicate glass-to-glass hermetic bonding for encapsulation of next-generation optoelectronics: A review
Publisher: Elsevier BV
Date: 07-2021
Complementary bulk and surface passivations for highly efficient perovskite solar cells by gas quenching
Publisher: Elsevier BV
Date: 08-2021
Characterization of 2-D reflection pattern from textured front surfaces of silicon solar cells
Publisher: Elsevier BV
Date: 08-2013
Emerging inorganic compound thin film photovoltaic materials: Progress, challenges and strategies
Publisher: Elsevier BV
Date: 12-2020
Progress toward a Si-plus architecture: Epitaxially-integrable Si sub-cells for III-V/Si multijunction photovoltaics
Publisher: IEEE
Date: 06-2016
Overcoming the Challenges of Large-Area High-Efficiency Perovskite Solar Cells
Publisher: American Chemical Society (ACS)
Date: 09-08-2017
Solution-Processed, Silver-Doped NiOx as Hole Transporting Layer for High-Efficiency Inverted Perovskite Solar Cells
Publisher: American Chemical Society (ACS)
Date: 24-01-2018
Mutual Insight on Ferroelectrics and Hybrid Halide Perovskites: A Platform for Future Multifunctional Energy Conversion
Publisher: Wiley
Date: 22-08-2019
Abstract: An insight into the analogies, state-of-the-art technologies, concepts, and prospects under the umbrella of perovskite materials (both inorganic-organic hybrid halide perovskites and ferroelectric perovskites) for future multifunctional energy conversion and storage devices is provided. Often, these are considered entirely different branches of research however, considering them simultaneously and holistically can provide several new opportunities. Recent advancements have highlighted the potential of hybrid perovskites for high-efficiency solar cells. The intrinsic polar properties of these materials, including the potential for ferroelectricity, provide additional possibilities for simultaneously exploiting several energy conversion mechanisms such as the piezoelectric, pyroelectric, and thermoelectric effect and electrical energy storage. The presence of these phenomena can support the performance of perovskite solar cells. The energy conversion using these effects (piezo-, pyro-, and thermoelectric effect) can also be enhanced by a change in the light intensity. Thus, there lies a range of possibilities for tuning the structural, electronic, optical, and magnetic properties of perovskites to simultaneously harvest energy using more than one mechanism to realize an improved efficiency. This requires a basic understanding of concepts, mechanisms, corresponding material properties, and the underlying physics involved with these effects.
Time-resolved fluorescence anisotropy study of organic lead halide perovskite
Publisher: Elsevier BV
Date: 07-2016
Transparent Electrodes Consisting of a Surface‐Treated Buffer Layer Based on Tungsten Oxide for Semitransparent Perovskite Solar Cells and Four‐Terminal Tandem Applications
Publisher: Wiley
Date: 02-04-2020
Forming openings to semiconductor layers of silicon solar cells by inkjet printing
Publisher: Elsevier BV
Date: 11-2008
Balancing electrical and optical losses for efficient 4-terminal Si–perovskite solar cells with solution processed percolation electrodes
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7TA10945H
Abstract: We present measured imputed efficiencies for 4-terminal perovskite–silicon solar cells of: 26.7% and 25.2% for PERL–perovskite and IBC–perovskite, respectively.
Designing bottom silicon solar cells for multijunction devices
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2015
Direct patterned etching of silicon dioxide and silicon nitride dielectric layers by inkjet printing
Publisher: Elsevier BV
Date: 10-2009
How reliable are efficiency measurements of perovskite solar cells? The first inter-comparison, between two accredited and eight non-accredited laboratories
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA05609E
Abstract: Towards improved reliability and relevance of indoor measurements of efficiency of perovskite solar cells.
The Role of Grown-In Defects in Silicon Minority Carrier Lifetime Degradation During Thermal Treatment in Epitaxial Growth Chambers
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2020
Effect of Silicon Front Surface Doping Profile on GaP/Si Heterostructure for III-V/GaP/Si Multi-junction Solar Cells
Publisher: IEEE
Date: 06-2018
High-performance solar flow battery powered by a perovskite/silicon tandem solar cell
Publisher: Springer Science and Business Media LLC
Date: 13-07-2020
A techno-economic analysis method for guiding research and investment directions for c-Si photovoltaics and its application to Al-BSF, PERC, LDSE and advanced hydrogenation
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SE00047F
Abstract: Uncertainty analysis combines cost, performance and market factors to guide research and investment decisions for selected c-Si PV technologies.
Effect of Hole Transport Materials and Their Dopants on the Stability and Recoverability of Perovskite Solar Cells on Very Thin Substrates after 7 MeV Proton Irradiation
Publisher: Wiley
Date: 22-05-2023
Abstract: The drastic reduction in launch and manufacturing costs of space hardware has facilitated the emergence of "commercial" space. Radiation‐hard organometal halide perovskite solar cells (PSCs) with low‐cost and high‐efficiency potentials are promising for space applications.High‐efficiency PSCs are tested with different hole transport materials (HTMs) and dopants on 175µm sapphire substrates under 7MeV‐proton‐irradiation‐tests at accumulated fluences of 10 11 , 10 12 , and 10 13 protons cm −2 . While all cells retain % of their initial power conversion efficiencies (PCEs) after 10 11 protons cm −2 irradiation, PSCs that have tris(pentafluorophenyl)borane (TPFB) as the HTM dopant and poly[bis(4‐phenyl)(2,5,6‐trimethylphenyl) amine (PTAA) or PTAA:C8BTBT (C8BTBT = 2,7‐Dioctyl[1]benzothieno[3,2‐b][1]benzothiophene) as the HTM are more tolerant to higher‐fluence radiation than their counterparts with the lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) dopant and the 2,2′,7,7′‐Tetrakis[N,N‐di(4‐methoxyphenyl)amino]‐9,9′‐spirobifluorene (Spiro‐OMeTAD) HTM. Radiation induces fluorine diffusion from the LiTFSI dopant toward the perovskite absorber (confirmed by depth‐resolved X‐ray photoelectron spectroscopy) introducing defects. Radiation‐induced defects in cells with the TPFB dopant instead are different and can be “annealed out” by thermal vacuum resulting in PCE recovery. This is the first report using thermal admittance spectroscopy and deep‐level transient spectroscopy for defect analyses on proton‐irradiated and thermal‐vacuum‐recovered PSCs. The insights generated are expected to contribute to efforts in developing low‐cost light‐weight solar cells for space applications.
Recent progress and future prospects of perovskite tandem solar cells
Publisher: AIP Publishing
Date: 15-10-2021
DOI: 10.1063/5.0061483
Abstract: Organic–inorganic metal halide perovskite solar cells represent the fastest advancing solar cell technology in terms of energy conversion efficiency improvement, as seen in the last decade. This has become a promising technology for next-generation, low-cost, high-efficiency photovoltaics including multi-junction tandem cell concepts. Double-junction tandem cells have much higher efficiency limits of 45%, beyond the Shockley–Queisser limits for a single-junction solar cell. In this review, recent progress with the perovskite tandem solar cells is highlighted, in particular, with 2-terminal perovskite–Si, perovskite–CIGS [where CIGS = Cu(In,Ga)(S,Se)2], perovskite–organic photovoltaic, perovskite–perovskite, and 3-junction-perovskite tandems. The opportunity and challenges of two-terminal monolithic perovskite tandems are discussed including a roadmap of strategies for further improving their efficiencies.
Structural study of hermetic seal formed by water glass at low temperature when trapped between glass plates
Publisher: IOP Publishing
Date: 19-08-2022
DOI: 10.35848/1347-4065/AC825E
Abstract: Hermetic sealing is an important technology in applications such as packaging of MEMS, sensors and vacuum glazing. Hydrocarbon materials like cyanoacrylate “super glue” have been used for convenient sealing. However, it is known that cyanoacrylate and other hydrocarbon glues are permeable to water vapour and do not act as a hermetic seal. On the other hand, there are some hermetic sealing techniques such as anodic bonding, ultrasonic solder bonding, solder glass bonding with or without laser assistance that require high process temperatures and are of high cost. In this paper, we assess water glass for low-cost hermetic sealing of soda lime glass at low temperatures of less than 100 °C. The vacuum level in a s le encapsulation was measured by means of a spinning rotor gauge which showed no pressure increase for one year. In addition, the bonding strength was also measured, showing that the 80 °C annealing process is the best process temperature for the highest adhesion strength.
Synergistic effect of potassium and iodine from potassium triiodide complex additive on gas-quenched perovskite solar cells
Publisher: Elsevier BV
Date: 09-2019
Ultrafast Carrier Dynamics in Methylammonium Lead Bromide Perovskite
Publisher: American Chemical Society (ACS)
Date: 02-2016
Acoustic-optical phonon up-conversion and hot-phonon bottleneck in lead-halide perovskites
Publisher: Springer Science and Business Media LLC
Date: 20-01-2017
DOI: 10.1038/NCOMMS14120
Abstract: The hot-phonon bottleneck effect in lead-halide perovskites (APbX 3 ) prolongs the cooling period of hot charge carriers, an effect that could be used in the next-generation photovoltaics devices. Using ultrafast optical characterization and first-principle calculations, four kinds of lead-halide perovskites (A=FA + /MA + /Cs + , X=I − /Br − ) are compared in this study to reveal the carrier-phonon dynamics within. Here we show a stronger phonon bottleneck effect in hybrid perovskites than in their inorganic counterparts. Compared with the caesium-based system, a 10 times slower carrier-phonon relaxation rate is observed in FAPbI 3 . The up-conversion of low-energy phonons is proposed to be responsible for the bottleneck effect. The presence of organic cations introduces overlapping phonon branches and facilitates the up-transition of low-energy modes. The blocking of phonon propagation associated with an ultralow thermal conductivity of the material also increases the overall up-conversion efficiency. This result also suggests a new and general method for achieving long-lived hot carriers in materials.
Integrating Low‐Cost Earth‐Abundant Co‐Catalysts with Encapsulated Perovskite Solar Cells for Efficient and Stable Overall Solar Water Splitting
Publisher: Wiley
Date: 10-11-2021
Electro- and photoluminescence imaging as fast screening technique of the layer uniformity and device degradation in planar perovskite solar cells
Publisher: AIP Publishing
Date: 20-07-2016
DOI: 10.1063/1.4956436
Abstract: In this study, we provide insights into planar structure methylammonium lead triiodide (MAPbI3) perovskite solar cells (PSCs) using electroluminescence and photoluminescence imaging techniques. We demonstrate the strength of these techniques in screening relatively large area PSCs, correlating the solar cell electrical parameters to the images and visualizing the features which contribute to the variation of the parameters extracted from current density-voltage characterizations. It is further used to investigate one of the major concerns about perovskite solar cells, their long term stability and aging. Upon storage under dark in dry glovebox condition for more than two months, the major parameter found to have deteriorated in electrical performance measurements was the fill factor this was elucidated via electroluminescence image comparisons which revealed that the contacts' quality degrades. Interestingly, by deploying electroluminescence imaging, the significance of having a pin-hole free active layer is demonstrated. Pin-holes can grow over time and can cause degradation of the active layer surrounding them.
Monolithic Perovskite-Perovskite-Silicon Triple-Junction Tandem Solar Cell with an Efficiency of over 20%
Publisher: American Chemical Society (ACS)
Date: 16-08-2022
Superior Self-Powered Room-Temperature Chemical Sensing with Light-Activated Inorganic Halides Perovskites
Publisher: Wiley
Date: 27-12-2018
Abstract: Hybrid halide perovskite is one of the promising light absorber and is intensively investigated for many optoelectronic applications. Here, the first prototype of a self-powered inorganic halides perovskite for chemical gas sensing at room temperature under visible-light irradiation is presented. These devices consist of porous network of CsPbBr
Room temperature optical properties of organic–inorganic lead halide perovskites
Publisher: Elsevier BV
Date: 06-2015
Deconstruction-assisted perovskite formation for sequential solution processing of Cs0.15(MA0.7FA0.3)0.85PbI3 solar cells
Publisher: Elsevier BV
Date: 12-2019
Understanding how chlorine additive in a dynamic sequential process affects FA0.3 MA0.7 PbI3 perovskite film growth for solar cell application
Publisher: Elsevier BV
Date: 12-2020
Spatial Distribution of Lead Iodide and Local Passivation on Organo-Lead Halide Perovskite
Publisher: American Chemical Society (ACS)
Date: 10-02-2017
Abstract: We identify nanoscale spatial distribution of PbI
Light- and bias-induced structural variations in metal halide perovskites
Publisher: Springer Science and Business Media LLC
Date: 25-01-2019
DOI: 10.1038/S41467-019-08364-1
Abstract: Organic–inorganic metal halide perovskites have gained considerable attention for next-generation photovoltaic cells due to rapid improvement in power conversion efficiencies. However, fundamental understanding of underlying mechanisms related to light- and bias-induced effects at the nanoscale is still required. Here, structural variations of the perovskites induced by light and bias are systematically investigated using scanning probe microscopy techniques. We show that periodically striped ferroelastic domains, spacing between 40 to 350 nm, exist within grains and can be modulated significantly under illumination as well as by electric bias. Williamson-Hall analysis of X-ray diffraction results shows that strain disorder is induced by these applied external stimuli. We show evidence that the structural emergence of domains can provide transfer pathways for holes to a hole transport layer with positive bias. Our findings point to potential origins of I – V hysteresis in halide perovskite solar cells.
Mixed 3D–2D passivation treatment for mixed-cation lead mixed-halide perovskite solar cells for higher efficiency and better stability
Publisher: Wiley
Date: 16-04-2018
Mobile Ion Induced Slow Carrier Dynamics in Organic–Inorganic Perovskite CH3NH3PbBr3
Publisher: American Chemical Society (ACS)
Date: 19-02-2016
Abstract: Here, we investigate photoluminescence (PL) and time-resolved photoluminescence (TRPL) in CH3NH3PbBr3 perovskite under continuous illumination, using optical and electro-optical techniques. Under continuous excitation at constant intensity, PL intensity and PL decay (carrier recombination) exhibit excitation intensity dependent reductions in the time scale of seconds to minutes. The enhanced nonradiative recombination is ascribed to light activated negative ions and their accumulation which exhibit a slow dynamics in a time scale of seconds to minutes. The observed result suggests that the organic-inorganic hybrid perovskite is a mixed electronic-ionic semiconductor. The key findings in this work suggest that ions are photoactivated or electro-activated and their accumulation at localized sites can result in a change of carrier dynamics. The findings are therefore useful for the understanding of instability of perovskite solar cells and shed light on the necessary strategies for performance improvement.
Unveiling the Importance of Precursor Preparation for Highly Efficient and Stable Phenethylammonium‐Based Perovskite Solar Cells
Publisher: Wiley
Date: 05-02-2020
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