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New substituted small A cation(Acetamidinium) based Tin perovskite solar cell

Kundu, S and Avasthi, S (2022) New substituted small A cation(Acetamidinium) based Tin perovskite solar cell. In: 49th IEEE Photovoltaics Specialists Conference, PVSC 2022, 5 - 10 June 2022, Philadelphia, pp. 1266-1270.

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Official URL: https://doi.org/10.1109/PVSC48317.2022.9938906


There is a need to search for high-efficiency Pb-free metal halide perovskites. Here we report a novel organic cation (Acetamidinium) for substituted formamidimium tin iodide perovskite. Using the acetamidinium-substituted formamidinium tin perovkite as the absorber, we demonstrate solar cells in the p-i-n configuration. The best device exhibited a power conversion efficiency ≈ 1%; with a short-circuit current density (J-{sc}) of 8.53 mA/cm2, open circuit-voltage (V-{oc}) of 0.3V, and fill-factor (FF) of 39%. Poor V-{oc} of the device is due to conduction band offset of absorber layer with PCBM and interfacial recombination.

Item Type: Conference Paper
Publication: Conference Record of the IEEE Photovoltaic Specialists Conference
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs Institute of Electrical and Electronics Engineers Inc.
Keywords: Efficiency; Lead compounds; Metal halides; Open circuit voltage; Perovskite; Positive ions; Solar absorbers; Tin compounds, Free metals; Halide perovskites; Higher efficiency; Metal contacts; Organic cations; Pb-free; Semi-transparent; Semi-transparent-metal contact; Steel substrate; Transparent metals, Perovskite solar cells
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 09 Jan 2023 07:28
Last Modified: 09 Jan 2023 07:28
URI: https://eprints.iisc.ac.in/id/eprint/78920

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