"Halide segregation critically limits the stability of mixed-halide perovskite solar cells under device operational conditions," Shengfan Wu, Yichao Yan and their colleagues wrote in their paper.

“Our study introduces an innovative lead iodide (PbI2) secondary growth and π-π stack regulation strategy that enhances the photovoltaic efficiency and stability of perovskite solar cells ...

Scientists in China built a four-terminal perovskite-CIGS tandem solar cell based on a top semi-transparent perovskite device with an efficiency of 21.26% and a high bifaciality factor of 92.2%. They ...