Enhancement in Open-Circuit Voltage of Semitransparent MAPbI3-xBrx perovskite solar cells by methyl amine treatment and optimal Hole Transport Layer

Mukherjee, R and Bhardwaj, S and Saha, A and Chandrashekhar, G and Viswanathan, VN and Ramamurthy, PC and Avasthi, S (2021) Enhancement in Open-Circuit Voltage of Semitransparent MAPbI3-xBrx perovskite solar cells by methyl amine treatment and optimal Hole Transport Layer. In: Conference Record of the IEEE Photovoltaic Specialists Conference, 15-21 August 2020, Calgary; Canada, pp. 2642-2645.

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Abstract

Wide bandgap perovskites (>1.7 eV) find applications in multi-junction solar cells and semi-transparent absorbers for building integrated photo-voltaics. Here we present the improvement in morphology and power conversion efficiency (PCE) of two mixed halide perovskite compositions: MAPbIBr2 and MAPbBr3 by methyl amine (MA) vapor treatment. MA treatment improves the morphology and surface coverage leading to increase in open-circuit voltage (Voc) and short-circuit current (Jsc). Further two polymers are used as hole-transporting materials which have better HOMO matching with perovskite than Spiro-OMeTAD and results in Voc of 1.12 V and 1.17 V for MAPbIBr2 and MAPbBr3 respectively compared to 0.95 V and 1.10 V of the corresponding devices with Spiro-OMeTAD as HTL. © 2020 IEEE.

Item Type:	Conference Paper
Publication:	Conference Record of the IEEE Photovoltaic Specialists Conference
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	cited By 0; Conference of 47th IEEE Photovoltaic Specialists Conference, PVSC 2020 ; Conference Date: 15 June 2020 Through 21 August 2020; Conference Code:166353
Keywords:	Conversion efficiency; Morphology; Multi-junction solar cells; Open circuit voltage; Perovskite; Solar absorbers; Solar buildings; Timing circuits, Building integrated; Halide perovskites; Hole transport layers; Hole-transporting materials; Power conversion efficiencies; Semi-transparent; Surface coverages; Wide band gap, Perovskite solar cells
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	04 Feb 2021 09:48
Last Modified:	04 Feb 2021 09:48
URI:	http://eprints.iisc.ac.in/id/eprint/67889

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