FILM IRRADIATION OF PEROVSKITE STRUCTURES WITH CHARGED PARTICLES

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Abstract

Hybrid halide perovskites of the ABX3 composition are promising materials for use in optoelectronics and photovoltaics. To enhance the efficiency of structures based on perovskite, simulating the influence of the environment on the structures in laboratory conditions, irradiating them with various charged particles, has become a relevant task. This study explores possible irradiation methods for films with perovskite structures using various charged particles, such as alpha and gamma particles, protons, and electrons. Additionally, the impact of these processes on the properties and application domains of such structures is assessed. The research results showed that films based on perovskites (for example, CsPbBr3 ) have a very fast response ( τ ∼5 ns) to irradiation with both alpha particles (with energy of ∼5 MeV) and protons. At the same time, they have the ability to fully restore to the initial conditions in a few hundred milliseconds after the cessation of irradiation. It has been shown that organic-inorganic hybrid perovskites are more sensitive to the action of an electron beam than inorganic onesAn increase in the dose of gamma irradiation leads to a decrease in the band gap (from 2,35 to 2,14 eV), a shift in the photoluminescence peak towards longer wavelengths and a decrease in the resistance of the grain boundaries. The effect of the gamma radiation dose on properties makes perovskite thin films very useful as sensor materials.

About the authors

Albert P. Bukreev

Saint Petersburg Electrotechnical University «LETI» named after V.I. Ulyanov

Email: bukreevalbert@mail.RUS
Lenin) (St. Petersburg, Russia

Ekaterina N. Muratova

Saint Petersburg Electrotechnical University «LETI» named after V.I. Ulyanov

Lenin) (St. Petersburg, Russia

Vyacheslav A. Moshnikov

Saint Petersburg Electrotechnical University «LETI» named after V.I. Ulyanov

Lenin) (St. Petersburg, Russia

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