Imec demonstrates long-term outdoor stability of perovskite solar modules

imec in collaboration with the University of Cyprus, has demonstrated long-term outdoor stability of perovskite solar modules. Mini-modules of 4 cm2, developed at imec/EnergyVille, were comprehensively evaluated over two years in real-world conditions in Cyprus, with a remarkable power efficiency retention of 78 percent after one year, which current perovskite solar modules only retain for weeks. These promising findings are among the first real-world results to address the stability issues that currently hinder perovskite solar cells from commercialization. EnergyVille, a collaboration between the Belgian research partners KU Leuven, VITO, imec and Uhasselt.

However, stability challenges remain the primary obstacle to widespread adoption, as they degrade due to moisture, light and heat. Standard indoor testing in a controlled environment, which continuously mimics sun irradiation, only serves as a proxy for real-world performance. Environmental conditions, such as varying light, temperature and weather, impact cell performance. Despite this, only a handful of research groups have investigated outdoor performance of perovskite PV, focusing primarily on small cells rather than modules.

Over the last two years, imec conducted a comprehensive study of the ...