Improved Current Density of Inverted Perovskite Solar Cells via Hole Transport Layer Doping

Inverted planar perovskite solar cells (PSCs) with a hole transport layer (HTL) made of poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) exhibit high power conversion efficiency (PCE). In this study, we introduce a dopant, tris[3,5-bis(trifluoromethyl)phenyl]phosphine...