Low-temperature synergistic effect of MA and Cl towards high-quality α-FAPbI<sub>3</sub> films for humid-air-processed perovskite solar cells
Hao Gao, Minghui Zhang, Zicong Xu, Yichuan Chen, Yuehui Hu, Zhijie Yi, Jiayu Huang, Hua Zhu
Abstract
films be obtained; therefore, a mechanism of MA-assisted nucleation and Cl-induced diffusion recrystallization is inferred. As a result, the PSCs employing optimal films yield a champion power conversion efficiency (PCE) of 17.27% and retain over 90% of the initial PCE after exposure to high humidity for 480 h. Our results offer deep insights into the thermodynamic and kinetic behaviors of MA and Cl in film growth and are beneficial for air-processed FA-based PSCs for commercial application.
Topics & Concepts
HumidityChemical engineeringCrystallinityAnnealing (glass)Perovskite (structure)Materials scienceChemistryComposite materialThermodynamicsEngineeringPhysicsPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyConducting polymers and applications