ORCID Profile
0000-0001-6250-6005
Current Organisations
Karlsruhe Institute of Technology
,
University of Stuttgart
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Publisher: Wiley
Date: 05-11-2015
DOI: 10.1002/PAT.3647
Publisher: Wiley
Date: 09-01-2020
Publisher: American Chemical Society (ACS)
Date: 31-10-2019
Abstract: Perovskite solar cells (PSCs) are one of the most promising emerging energy-conversion technologies because of their high power conversion efficiencies (PCEs) and potentially low fabrication cost. To improve PCE, it is necessary to develop PSCs with good interfacial engineering to reduce the trap states and carrier transport barriers present at the various interfaces of the PSCs' architecture. This work reports a facile method to improve the interface between the perovskite absorber layer and the hole transport layer (HTL) by adding a small amount of acetonitrile (ACN) in the Spiro-OMeTAD precursor solution. This small amount of ACN dissolves the surface of the perovskite layer, allowing the formation of an interdiffusion structure between perovskite and Spiro-OMeTAD layers. This modification allows for an improved electrical contact, enhanced collection of holes, and reduced recombination losses at the interface between the perovskite and Spiro-OMeTAD layers and, consequently, enhances the PCE. A maximum PCE of 19.7% with low hysteresis and a steady-state power conversion efficiency of 19.0% is obtained for optimized PSCs.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA06646J
Abstract: Controlling the thickness and homogeneity of thin passivation layers on polycrystalline perovskite thin films is challenging. We report CVD polymerization of poly( p -xylylene) layers at controlled substrate temperatures for efficient surface passivation of perovskite films.
Publisher: AIP Publishing
Date: 10-2021
DOI: 10.1063/5.0047616
Abstract: Metal halide perovskites are the first solution processed semiconductors that can compete in their functionality with conventional semiconductors, such as silicon. Over the past several years, perovskite semiconductors have reported breakthroughs in various optoelectronic devices, such as solar cells, photodetectors, light emitting and memory devices, and so on. Until now, perovskite semiconductors face challenges regarding their stability, reproducibility, and toxicity. In this Roadmap, we combine the expertise of chemistry, physics, and device engineering from leading experts in the perovskite research community to focus on the fundamental material properties, the fabrication methods, characterization and photophysical properties, perovskite devices, and current challenges in this field. We develop a comprehensive overview of the current state-of-the-art and offer readers an informed perspective of where this field is heading and what challenges we have to overcome to get to successful commercialization.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA00585E
Abstract: In this work, we introduce a bilayer ETL composed of lithium (Li)-doped compact SnO 2 (c-SnO 2 ) and potassium-capped SnO 2 nanoparticle layers (NP-SnO 2 ) to enhance the electron extraction and charge transport properties in perovskite solar cells, resulting in an improved PCE and a strongly reduced J – V hysteresis.
Location: Korea, Republic of
No related grants have been discovered for Mahdi Malekshahi Byranvand.