ORCID Profile
0000-0003-1035-9554
Current Organisation
Charles Darwin University
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Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 02-2018
Publisher: IEEE
Date: 07-2016
Publisher: Elsevier BV
Date: 03-2018
Publisher: Elsevier BV
Date: 05-2020
Publisher: Springer Science and Business Media LLC
Date: 25-07-2018
Publisher: Elsevier BV
Date: 2017
Publisher: Wiley
Date: 07-03-2018
DOI: 10.1002/PIP.2483
Publisher: IEEE
Date: 04-2011
Publisher: Elsevier BV
Date: 03-2014
Publisher: Elsevier BV
Date: 12-2216
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 02-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7NR06812C
Abstract: Adsorbed carbon nanomaterial based dual electron transport layer ensures more efficient and stable perovskite solar cells.
Publisher: MDPI AG
Date: 25-10-2016
DOI: 10.3390/EN9110861
Publisher: MDPI AG
Date: 04-07-2023
DOI: 10.3390/MOLECULES28135192
Abstract: Ionogels are hybrid materials comprising an ionic liquid confined within a polymer matrix. They have garnered significant interest due to their unique properties, such as high ionic conductivity, mechanical stability, and wide electrochemical stability. These properties make ionogels suitable for various applications, including energy storage devices, sensors, and solar cells. However, optimizing the electrochemical performance of ionogels remains a challenge, as the relationship between specific capacitance, ionic conductivity, and electrolyte solution concentration is yet to be fully understood. In this study, we investigate the impact of electrolyte solution concentration on the electrochemical properties of ionogels to identify the correlation for enhanced performance. Our findings demonstrate a clear relationship between the specific capacitance and ionic conductivity of ionogels, which depends on the availability of mobile ions. The reduced number of ions at low electrolyte solution concentrations leads to decreased ionic conductivity and specific capacitance due to the scarcity of a double layer, constraining charge storage capacity. However, at a 31 vol% electrolyte solution concentration, an le quantity of ions becomes accessible, resulting in increased ionic conductivity and specific capacitance, reaching maximum values of 58 ± 1.48 μS/cm and 45.74 F/g, respectively. Furthermore, the synthesized ionogel demonstrates a wide electrochemical stability of 3.5 V, enabling erse practical applications. This study provides valuable insights into determining the optimal electrolyte solution concentration for enhancing ionogel electrochemical performance for energy applications. It highlights the impact of ion pairs and aggregates on ion mobility within ionogels, subsequently affecting their resultant electrochemical properties.
Publisher: American Chemical Society (ACS)
Date: 26-09-2013
DOI: 10.1021/AM4013853
Publisher: IEEE
Date: 04-2011
Publisher: Springer Science and Business Media LLC
Date: 2017
Publisher: Elsevier BV
Date: 04-2018
Publisher: American Chemical Society (ACS)
Date: 11-10-2012
DOI: 10.1021/JP304876J
Publisher: Elsevier BV
Date: 11-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CP50994J
Publisher: AIP Publishing
Date: 03-2022
DOI: 10.1063/5.0077959
Abstract: Electrospinning is one of the most accessed nanofabrication techniques during the last three decades, attributed to its viability for the mass production of continuous nanofibers with superior properties from a variety of polymers and polymeric composites. Large investments from various sectors have pushed the development of electrospinning industrial setups capable of producing nanofibers in millions of kilograms per year for several practical applications. Herein, the lessons learned over three decades of research, innovations, and designs on electrospinning products are discussed in detail. The historical developments, engineering, and future opportunities of electrospun nanofibers (ESNFs) are critically addressed. The laboratory-to-industry transition gaps for electrospinning technology and ESNFs products, the potential of electrospun nanostructured materials for various applications, and academia-industry comparison are comprehensively analyzed. The current challenges and future trends regarding the use of this technology to fabricate promising nano/macro-products are critically demonstrated. We show that future research on electrospinning should focus on theoretical and technological developments to achieve better maneuverability during large-scale fiber formation, redesigning the electrospinning process around decarbonizing the materials processing to align with the sustainability agenda and the integration of electrospinning technology with the tools of intelligent manufacturing and IR 4.0.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CP04053A
Abstract: In this work, we have demonstrated the incorporation of metal (Ag NPs) and dielectric nanoparticles (SiO 2 NPs) into the hole transporting layers of inverted PSCs using facile deposition methods.
Publisher: IEEE
Date: 2013
Publisher: Elsevier BV
Date: 03-2018
Publisher: Wiley
Date: 23-11-2016
Publisher: Elsevier BV
Date: 2017
Publisher: Springer Science and Business Media LLC
Date: 03-07-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA23288D
Abstract: Sub-bandgap defect characterization in PTB7 by photothermal deflection spectroscopy (PDS).
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5EE02871J
Abstract: Factors and governing mechanisms influencing the open circuit voltage – a key determinant for improving the device performance efficiency.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1EE02703D
Publisher: Elsevier BV
Date: 03-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CP53352B
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 02-2017
Publisher: Elsevier BV
Date: 09-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NR06151J
Abstract: Sub-bandgap defect characterization of PBDB-T:ITIC after photo-degradation by photo-thermal deflection spectroscopy (PDS).
Publisher: IEEE
Date: 06-2016
Publisher: Wiley
Date: 25-10-2022
Abstract: Ionogels have established themselves as an intriguing type of composites, owing to their distinctive properties, including superior thermal stability, non‐flammability, tunable electrochemical stability window, and high ionic conductivity. Hybrid materials based on ionic liquids (ionogels) are held together by interfaces arising out of intermolecular interactions, including electrostatic, van der Waals, solvophobic, steric, and hydrogen bonding. The interfaces within the ionic liquid (ILs) and its multifaceted interplay with the encapsulating matrix greatly influence the physicochemical and electronic/ionic interactions within the composite resulting in exceptional characteristics, allowing for the design of ionogels for targeted applications. Though ionogels have shown superior properties comparable to neat ILs, they still exhibit relatively low mechanical strength, limiting their application in several practical technologies. Simultaneous enhancement of mechanical durability while retaining high ionic conductivity is indispensable, which requires understanding interfaces and related influencing parameters. This review provides a synergetic comprehension, focusing on the interactive forces and factors affecting the conductivity, stability, and robustness of ionogels. Correlating with interfaces, several strategies, including the implications of nanofiller incorporation on the electromechanical properties of ionogel, are also elaborated. Finally, a primer is provided on the application of ionogels in sensors and energy harvesting technologies.
Publisher: IEEE
Date: 06-2016
Publisher: Elsevier BV
Date: 02-2018
Publisher: Wiley
Date: 21-05-2012
Publisher: Springer Science and Business Media LLC
Date: 25-05-2018
Publisher: Elsevier BV
Date: 05-2018
Publisher: Elsevier BV
Date: 12-2018
Publisher: IEEE
Date: 06-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA14186B
Abstract: Low temperature (140 °C) processed MA 0.6 FA 0.4 PbI 3 /AZO devices exhibit 20% higher PCE and two-fold higher device stability compared to MA 0.6 FA 0.4 PbI 3 /ZnO devices.
Publisher: Elsevier BV
Date: 05-2019
Publisher: IEEE
Date: 06-2017
Publisher: Elsevier BV
Date: 11-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CP03551A
Abstract: A F4TCNQ doped FDT HTL based PSC demonstrates 75% higher device stability than a conventional Li-TFSI doped FDT based PSC.
Publisher: Elsevier BV
Date: 08-2017
Publisher: IEEE
Date: 06-2017
Publisher: Elsevier BV
Date: 08-2017
Publisher: Inderscience Publishers
Date: 2014
Publisher: American Chemical Society (ACS)
Date: 06-09-2017
Publisher: Wiley
Date: 27-12-2017
Publisher: American Chemical Society (ACS)
Date: 25-09-2017
Abstract: The current work reports the lithium (Li) doping of a low-temperature processed zinc oxide (ZnO) electron transport layer (ETL) for highly efficient, triple-cation-based MA
Publisher: IEEE
Date: 06-2017
Publisher: Elsevier BV
Date: 04-2016
Publisher: Elsevier BV
Date: 03-2018
Publisher: AIP Publishing
Date: 13-11-2013
DOI: 10.1063/1.4829456
Abstract: The relationship between charge carrier lifetime and mobility in a bulk heterojunction based organic solar cell, utilizing diketopyrrolopyrole-naphthalene co-polymer and PC71BM in the photoactive blend layer, is investigated using the photoinduced charge extraction by linearly increasing voltage technique. Light intensity, delay time, and temperature dependent experiments are used to quantify the charge carrier mobility and density as well as the temperature dependence of both. From the saturation of photoinduced current at high laser intensities, it is shown that Langevin-type bimolecular recombination is present in the studied system. The charge carrier lifetime, especially in Langevin systems, is discussed to be an ambiguous and unreliable parameter to determine the performance of organic solar cells, because of the dependence of charge carrier lifetime on charge carrier density, mobility, and type of recombination. It is revealed that the relation between charge mobility (μ) and lifetime (τ) is inversely proportional, where the μτ product is independent of temperature. The results indicate that in photovoltaic systems with Langevin type bimolecular recombination, the strategies to increase the charge lifetime might not be beneficial because of an accompanying reduction in charge carrier mobility. Instead, the focus on non-Langevin mechanisms of recombination is crucial, because this allows an increase in the charge extraction rate by improving the carrier lifetime, density, and mobility simultaneously.
Publisher: Wiley
Date: 22-05-2020
DOI: 10.1111/ANDR.12809
Publisher: IEEE
Date: 06-2017
Publisher: Elsevier BV
Date: 12-2016
Publisher: Elsevier BV
Date: 08-2017
No related grants have been discovered for Naveen Kumar Elumalai.