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Perovskite Grain Size modulation by annealing in Methyl-Amine Environment

Chouhan, AS and Jasti, NP and Hadke, S and Raghavan, S and Avasthi, S (2018) Perovskite Grain Size modulation by annealing in Methyl-Amine Environment. In: 44th IEEE Photovoltaic Specialist Conference, PVSC 2017, 25 - 30 June 2017, Washington, pp. 986-988.

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Official URL: https://doi.org/10.1109/PVSC.2017.8366774


Here we present a novel vapor-annealing technique to improve morphology of pure-iodide perovskite (CH3NH3PbI3) thin-films and get pin-hole-free coverage with > 10μm grain size. X-Ray diffraction (XRD) measurement confirms that the annealed films are phase pure perovskite. The larger grain size leads to a significant increase in the effective recombination lifetime of charge carriers, with the best films showing lifetime of >50 μs. Solar cells fabricated with the large grain perovskite thin film shows significant improvement in short-circuit current density (Jsc) and open-circuit voltage (Voc). © 2017 IEEE.

Item Type: Conference Paper
Publication: 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords: Annealing; Grain size and shape; Morphology; Open circuit voltage; Perovskite solar cells; Thin films, Annealed films; Annealing techniques; Grainsize; Methyl amine; Perovskite grains; Phase pure; Pin holes; Thin-films; Vapor annealing; X-ray diffraction measurements, Perovskite
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 03 Jan 2023 07:32
Last Modified: 03 Jan 2023 07:32
URI: https://eprints.iisc.ac.in/id/eprint/78756

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