A comparative study of two-step and three-step annealing processes for PVDF added FASnI3 film quality and solar cell

Basavaraju, U and Bajpai, Y and Nagahanumaiah, . and Ramamurthy, PC (2024) A comparative study of two-step and three-step annealing processes for PVDF added FASnI3 film quality and solar cell. In: UNSPECIFIED.

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Abstract

Among the non-toxic perovskites, tin-halide perovskite solar cell (PSC) is the most attractive for commercial application. However, their efficiencies and long-term stability currently lag behind their toxic lead-based counterparts, primarily due to high open-circuit voltage (VOC) loss and oxidation. In this study, we introduce poly(vinylidene fluoride) (PVDF) as a polymer passivation agent within the tin perovskite structure, leveraging the ability of the fluorine atoms in the PVDF chain to establish robust hydrogen bonds with organic cations. The interaction of PVDF with perovskite depends on the twostep and three-step annealing (3SA) process during the perovskite film growth. We obtained a PSC with higher efficiency in the 3SA process, reduced defect density, and improved film quality. © 2024 IEEE.

Item Type:	Conference Paper
Publication:	IEEE Electron Devices Technology and Manufacturing Conference: Strengthening the Globalization in Semiconductors, EDTM 2024
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:	Efficiency; Film growth; Fluorine compounds; Hydrogen bonds; Open circuit voltage; Perovskite; Perovskite solar cells; Tin compounds, Annealing process; Cell/B.E; Comparatives studies; Film quality; Halide perovskites; Non-toxic; Poly(vinylidene fluoride); Three-step annealing; Tin halides, Annealing
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	03 Jun 2024 09:04
Last Modified:	03 Jun 2024 09:04
URI:	https://eprints.iisc.ac.in/id/eprint/85118

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