The regulation of perovskite crystallization is essential for achieving efficient solar cells. Here, authors introduce K2SnO3 to induce formation of KI and PbSnO3 with an ABX3 structure to enhance film uniformity, achieving efficiency of 28.81% for four-terminal all-perovskite tandem solar cells.
- Weiqing Chen
- Shun Zhou
- Weijun Ke
