Takeo Oku

Effects of Lanthanoid Codoping on Hysteresis Suppression, Long‐Term Stability, and Fill Factor Improvement in Perovskite Solar Cells

In the development of perovskite solar cells (PSCs), ion migration–induced hysteresis, long‐term stability degradation, and reduced fill factor caused by bulk and grain‐boundary defects remain critical challenges. In this study, lanthanoid (Yb/Er, Gd/Nd, Ce/Nd, Gd/Ce, and Yb/Nd)...