Stabilizing black-phase FAPbI<sub>3</sub>in humid air with secondary ammoniums
Ruixue Lu, Yang Liu, Dongyuan Zhao, Xin Guo, Can Li
Abstract
Three secondary ammoniums (SAs) were applied to stabilize α-FAPbI 3 under high humidity. Substituent-dependent distributions and functions of SAs in FAPbI 3 films were investigated. A photovoltaic efficiency of 23.38% with high stability was achieved.
Topics & Concepts
SubstituentHumidityMaterials sciencePhase (matter)Chemical engineeringChemistryOrganic chemistryMeteorologyPhysicsEngineeringPerovskite Materials and ApplicationsOptical properties and cooling technologies in crystalline materials2D Materials and Applications