CsPbBr₃ Quantum Dots‐Sensitized Mesoporous TiO₂ Electron Transport Layers for High‐Efficiency Perovskite Solar Cells

Abstract

Perovskite Solar Cells In article number 2300072, Michael Grätzel, Jingshan Luo, and co-workers show that the carrier transport layer plays a critical role in high-efficiency and stable perovskite solar cells (PSCs). They developed CsPbBr3 quantum dots sensitized mesoporous TiO2 (CPB-TiO2), which enhances perovskite crystallinity, phase stability, and reduces the non-radiative carrier recombination in PSCs. As a result, the CPB-TiO2 significantly improves the power conversion efficiency of FAPbI3 PSCs from 23.11% to 24.46%.