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When iodide meets bromide: Halide mixing facilitates the light-induced decomposition of perovskite absorber films by Akbulatov, Azat F. (author);Ustinova, Marina I. (author);Gutsev, Lavrenty (author);Tsarev, Sergey A. (author);Dremova, Nadezhda N. (author);Zhidkov, Ivan (author);Luchkin, Sergey Yu. (author);Ramachandran, Bala R. (author);Frolova, Lyubov (author);Kurmaev, Ernst Z. (author);Stevenson, Keith J. (author);Aldoshin, Sergey M. (author);Troshin, Pavel A. (author) is a Engineering article available to read on EtoBox.

What is When iodide meets bromide: Halide mixing facilitates the light-induced decomposition of perovskite absorber films about?

APbX3 lead perovskites, where A is either an organic (methylammonium MA+ and formamidinium FA+) or an inorganic (Cs+) species, have recently emerged as highly promising photovoltaic materials. This interest is related to the exceptionally high power conversion efficiency (> 25%) demonstrated recently in the case of mixed-cation and mixed-halide perovskites. However, the poor intrinsic stability of complex lead halides remains a major hindrance in the commercialization of this emerging photovoltaic technology. An intense research effort is currently focused on revealing the origins and mechanistic aspects of the various pathways of degradation occurring in perovskite solar cells. In this paper, we present a systematic comparative study of a series of mixed-cation perovskite systems: MA0.15FA0.85PbI2.55Br0.45, Cs0.1MA0.15FA0.75PbI2.55Br0.45, Cs0.15FA0.85PbI2.55Br0.45, MA0.15FA0.85PbI3, Cs0.1MA0.15FA0.75PbI3, and Cs0.15FA0.85PbI3 all of which deliver high photovoltaic efficiencies in devices. Using a set of complementary analytical techniques, we demonstrate that bromide-containing mixed-halide perovskites have much lower photostability when compared to the equivalent iodide-based mat

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Author
Akbulatov, Azat F. (author);Ustinova, Marina I. (author);Gutsev, Lavrenty (author);Tsarev, Sergey A. (author);Dremova, Nadezhda N. (author);Zhidkov, Ivan (author);Luchkin, Sergey Yu. (author);Ramachandran, Bala R. (author);Frolova, Lyubov (author);Kurmaev, Ernst Z. (author);Stevenson, Keith J. (author);Aldoshin, Sergey M. (author);Troshin, Pavel A. (author)
Publisher
Elsevier BV
Published
2021
Language
EN
Field
Engineering (Physical Sciences)

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