Peng Gao等人首次引入氟化芳香阳离子,2-(4-氟苯基)乙基碘化铵(FPEAI),在3D钙钛矿薄膜上原位生长低维钙钛矿层。得到的(p-FC6H4C2H4NH3)2[PbI4]钙钛矿覆盖层起到保护作用,使得3D钙钛矿免受潮湿。同时,薄层促进界面处的电荷转移,从而减少非辐射复合途径。制备的器件实现了20.54%的高效率,水稳定性得到大大提升。
High‐Performance Perovskite Solar Cells with Enhanced Environmental Stability Based on a (p-FC6H4C2H4NH3)2[PbI4] Capping Layer
Doi.org/10.1002/aenm.201802595.
https://onlinelibrary.wiley.com/doi/abs/10.1002/aenm.201802595