Publication

Making from Breaking: Degradation Inversion Enables Vapor-Phase Synthesis of Halide Perovskites in Ambient Conditions

Christophe Ballif, Aïcha Hessler-Wyser, Christian Michael Wolff, Kerem Artuk, Mostafa Rabie Shlaly Bahr Othman, Austin George Kuba
2025

Abstract

Vapor phase deposition of formamidinium-rich perovskites is hampered by the decomposition of formamidine in the vapor phase. We use the reversibility of this reaction to establish a dynamic equilibrium that enables the vapor-phase synthesis of formamidinium iodide from the “degradation products” s-triazine, ammonia, and hydrogen iodide and thereby convert lead halide thin films to lead halide perovskites. Finally, we produce the first proof of concept solar cells via this innovative process.

Official source

https://infoscience.epfl.ch/entities/publication/4c9623d0-d69d-45a7-8d39-aba3b638e2cd

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Making from Breaking: Degradation Inversion Enables Vapor-Phase Synthesis of Halide Perovskites in Ambient Conditions

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