Progress and perspectives on accelerated degradation modeling of perovskite solar cells

Perovskite solar cells (PSCs) have emerged as an alternative to commercially available silicon photovoltaic technology due to their comparable power conversion efficiency (PCE) of over 26 %, low cost, and easy-to-scale synthesis process. To commercialize PSCs, they must operate effectively under extreme conditions as defined by the International Electrotechnical Commission (IEC) and the International Summit on Organic PV Stability (ISOS). Recent research on PSCs has centered on enhancing PCE and performing accelerated degradation tests, which involve a comprehensive analysis and precise quantification of device degradation, utilizing standard protocols and diverse degradation schemes. Understanding PSCs' reliability requires fitting their PCE's degradation kinetics using several existing degradation models. This review highlights the need to adapt multiple degradation models for PSCs to accurately model the degradation kinetics of their PCE under extreme conditions such as temperature, humidity, light, and bias. Further, relevant degradation models are discussed, illustrating the potential effects of the accelerated factors on PSCs, and can be used to model and simulate the degradation kinetics of PSCs. For instance, the Arrhenius and Eyring models are employed to predict temperature-induced degradation. In contrast, Hallberg-Peck and Eyring models may be used for humidity-induced degradation. The article underscores the necessity of comprehensive models that consider multiple factors simultaneously to accurately predict PSC stability under real-world conditions. Additionally, it addresses the remaining challenges in modeling PSC degradation and identifies the figures of merit that can be derived from device degradation data. Future research should prioritize developing comprehensive degradation models and standardized protocols to further advance PSC technology for sustainable development. • Recent progress in understanding accelerated degradation modeling for perovskite solar cells (PSCs) has been overviewed. • In-depth and critical analyses have been presented to understand the accelerated degradation modeling of PSCs. • Perspectives for modeling combined degradation with more than one variable have been provided. • State-of-the-art issues of various degradation factors for PSCs have been discussed. • A future perspective for degradation modeling has been suggested.