Proceedings of Perovskite Thin Film Photovoltaics (ABXPV17)
Publication date: 18th December 2016
We will present a simple process to convert a metallic film of Pb(0), Sn(0) or a mixture of those to an ABX3 halide perovskite by introducing to AX [e.g., methylammonium iodide (MAI), MABr, CsI, etc.] salts dissolved in simple alcoholic solvents.(1) The novel approach shows a reproducible and high-quality films of various (including mixed) halide perovskites. This together with the significantly reduced toxicity suggest a promising rough towards scale-up. A much lower toxicity of this fabrication method is achieved by avoiding the use of polar aprotic solvents, such as dimethylformamide or dimethylsulfoxide, which are commonly used and become very toxic when containing Pb cations.We will describe of our findings, including examples of the direct transformation from Pb and Sn to, for example, MAPbI3, MAPbBr3, MAPb(Br,I)3, FAPbI3, MASnI3 and the pseudo-perovskite Cs2SnI6. Apart from I-V characterizations of full devices, morphological and electro-optical characterizations will be presented.
(1) Y. Rakita, N. Kedem, D. Cahen, G. Hodes, Pat.Appl. # IL 245536 – ‘process for the preparation of halide perovskites and perovskite-related materilas’
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