Mechanisms of radiation-induced degradation of hybryd perovskites based solar cells and ways to increase their radiation tolerance

TL;DR

This paper investigates the mechanisms behind radiation-induced degradation in hybrid perovskite solar cells and proposes methods to enhance their radiation tolerance by understanding ionization and scattering effects.

Contribution

It provides a detailed analysis of radiation effects on perovskites and identifies key channels for improving their resistance to radiation damage.

Findings

Ionization of iodine ions contributes to degradation.

Elastic scattering leads to formation of recombination centers.

Fractal interface structures influence photodegradation levels.

Abstract

The basic processes of perovskite radiation resistance are discussed for photo- and high-energy electron irradiation. It is shown that ionization of iodine ions and a staged mechanism of elastic scattering (upon intermediate scattering on light ions of an organic molecule) lead to the formation of a recombination center Ii. The features of ionization degradation of interfaces with both planar and fractal structures are considered. A special type of fractality is identified, and its minimum possible level of photodegradation is predicted. By using the methodology of classical radiation physics, the Hoke effect was also studied, as well as the synergetics of cooperative phenomena in tandem systems. The principal channels for counteracting the radiation degradation of solar cells based on hybrid perovskites have been revealed.