Theoretical Studies of Gamma-Induced Self-Healing of MAPbI3: Breaking the Rcords

Lavrenty G. Gutsev^a^,^b, Aleksandra G. Boldyreva^c, Lyubov A. Frolova^a, Ivan S. Zhidkov^d, Ernst Z. Kurmaev^d^,^e, Bala R. Ramachandran^b, Vladimir G. Petrov^f, Keith J. Stevenson^c, Sergei M. Aldoshin^a, Pavel A. Troshin^a^,^c

^aThe Institute for Problems of Chemical Physics of the Russian Academy of Sciences RAS, Russia, Semenov Prospect 1, Russian Federation

^bLouisiana Tech University, Institute for Micromanufacturing, Louisiana, Misuri 63353, EE. UU., Louisiana, United States

^cSkoltech - Skolkovo Institute of Science and Technology, Moscow, Bolshoy Boulevard 30, Moskva, Russian Federation

^dInstitute of Physics and Technology, Ural Federal University, Russia, Mira st. 19, Yekaterinburg, Russian Federation

^eM. N. Mikheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, Russia, S. Kovalevskoi st. 18, Yekaterinburg, Russian Federation

^fLomonosov Moscow State University, Lenin Hills, Moscow, Russian Federation

Online Conference
Proceedings of Internet Conference on Theory and Computation of Halide Perovskites (ComPer)

Online, Spain, 2020 September 8th - 9th

Organizers: Giacomo Giorgi and Linn Leppert

Poster, Lavrenty G. Gutsev, 037
Publication date: 4th September 2020

ePoster:

In this work, we report a comparative study of the gamma ray stability of perovskite

solar cells based on a series of perovskite absorbers including MAPbI3 (MA =

methylammonium), MAPbBr3, Cs0.15FA0.85PbI3 (FA = formamidinim),

Cs0.1MA0.15FA0.75PbI3, CsPbI3, and CsPbBr3. We reveal that the composition of the

perovskite material strongly affects the radiation stability of the solar cells. In particular,

solar cells based on the MAPbI3 were found to be the most resistant to gamma rays since

this perovskite undergoes rapid self-healing due to the special gas-phase chemistry

analyzed with ab initio calculations. The fact that the solar cells based on MAPbI3 can

withstand 1000 kRad gamma ray dose without any noticeable degradation of the

photovoltaic properties) is particularly exciting and shifts the paradigm of research in this

field towards designing more dynamic rather than intrinsically robust (e.g. inorganic)

materials.

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