NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2015, 6 (6), P. 825-832
Degradation of perovskites and Dexter-Varley paradox
B. L. Oksengendler – Scienti c Center of Chemistry and Physics of Polymers at National University of Uzbekistan, Tashkent; Institute of Ion-Plasma and Laser Technologies, Uzbek Academy of Sciences, Tashkent, Uzbekistan; oksengendlerbl@yandex.ru
S. E. Maksimov – Institute of Ion-Plasma and Laser Technologies, Uzbek Academy of Sciences, Tashkent, Uzbekistan; maksimov_s@yahoo.com
M. B. Marasulov – Scienti c Center of Chemistry and Physics of Polymers at National University of Uzbekistan, Tashkent, Uzbekistan
This work presents a model for the degradation mechanism of organic{inorganic hybrid photovoltaic solar cells based on perovskites. The cross section for formation of Frenkel pairs in the sublattice of iodine is obtained. The channels for its annealing are found. Special attention is paid to the polaron states. It is shown that the stationary number of defects non-monotonically depends on the intensity of solar radiation. This allows one to analyze the properties of the radiation resistance of a device to ionizing radiation.
Keywords: perovskites, degradation, ionizing irradiation, Varley mechanism, polaronic states, organic solar cells.
PACS 75.50.Tt, 81.16.Hc, 87.85.Rs
DOI 10.17586/2220-8054-2015-6-6-825-832
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