Investigation of the Temperature Coefficients of Perovskite Solar Cells for Application in High‐Temperature Environments

Abstract Perovskite solar cells are actively investigated for their potential as highly efficient and cost‐effective photovoltaic devices. However, a significant challenge in their practical application is enhancing their durability. Particularly, these cells are expected to be subjected to heating by sunlight in real‐world operating environments. Therefore, high‐temperature durability and device operation under such conditions are critical. Our study aims to improve the durability of perovskite solar cells for practical applications by examining their temperature coefficients at elevated temperatures using MA‐free compositions. We assessed these coefficients and investigated their correlation with the ideality factor, revealing that carrier recombination markedly affects the temperature behavior of these cells. Our methodology involves simple J‐V measurements to evaluate device degradation at high temperatures, paving the way for further research to enhance device performance in such environments.