Implementation of Transparent Radiative Cooling Technology on Perovskite Solar Cells to Reduce Efficiency Degradation

Abstract

Thermal degradation of perovskite solar cells (SSCs) is a major obstacle in maintaining the stability and efficiency of power conversion. Increasing the operating temperature of solar cells can accelerate degradation through mechanisms such as ion migration and phase segregation, thereby significantly degrading performance. Transparent radiative cooling (TRT) technology offers an innovative passive solution by utilizing infrared heat emission in the range of 8–13 ?m without reducing visible light transmission, thus maintaining optical efficiency. This study combines experimental and simulation methods to develop a hybrid SiO?–PDMS-based TRT layer integrated on SSC. The results showed a decrease in cell operating temperature by an average of 10.2°C, which contributed to a 7.3% increase in relative PCE and maintained efficiency of up to 91.4% after 1000 hours of thermal acceleration testing. Additionally, TRT reduces defect density by up to 40%, inhibits perovskite material degradation, and extends operational life. However, challenges related to coating durability and production costs require further investigation. The study recommends the development of low-cost polymer materials and the integration of multilayer designs for performance optimization. These findings support TRT's potential in lowering the cost of levelized electricity (LCOE) and accelerating the commercialization of high-power, durable PSCs.