Simulations of the electronic stopping power in perovskites

Electronic stopping power describes the energy transfer rate to electrons in material during ion irradiation. We use time-dependent density functional theory to calculate electronic stopping power in triple-cation perovskites (formamidinium, methylammonium, and cesium). These materials have some of the highest power conversion efficiencies for perovskite-based photovoltaics. From simulations we can estimate the stopping process of ions and this would have implications for the use of photovoltaic devices for space missions.