Making from Breaking: Degradation Inversion Enables Vapor-Phase Synthesis of Halide Perovskites in Ambient Conditions
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Author
Kuba, Austin G.
Sahli, Florent
Othman, Mostafa
Artuk, Kerem
Jeangros, Quentin
Hessler-Wyser, Aïcha
Ballif, Christophe
Wolff, Christian M.
DOI
10.1021/acsenergylett.4c03395
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.
Publication Reference
ACS Energy Letters, 10 (6), pp. 2710 - 2717
Year
2025