Weijun Ke

Grain Boundary-Confined Lead Halides Mitigate Post-Treatment Surface Lattice Distortion in Wide-Bandgap Perovskites for Efficient Tandem Solar Cells

Abstract Wide-bandgap (WBG) perovskite solar cells (PSCs) have attracted increasing attention due to their essential role in high-efficiency tandem architectures. Post-treatment strategies are commonly employed to improve WBG perovskite films by modifying surface states and enhan...

Kinetic Regulation of Intercalation-Assisted Crystallization in Hybrid Evaporation–Solution Perovskite Solar Cells

Abstract Hybrid evaporation–solution processing offers a promising route for high-efficiency perovskite solar cells; however, the dense lead iodide (PbI2) framework leads to competing intercalation and dissolution–recrystallization pathways, resulting in incomplete conversion and...