Suppressing charge recombination in a methylammonium-free wide-bandgap perovskite film for high-performance and stable perovskite solar cells
Qiufeng Ye, Wenzheng Hu, Junchi Zhu, Ziyu Cai, Hengkang Zhang, Tao Dong, Boyang Yu, Feiyang Chen, Xieli Wei, Bo Yao, Weidong Dou, Zebo Fang, Feng Ye, Zhun Liu, Tie Li
Abstract
We employed RbI additive, constructed heterojunction, and used TOPO post-treatment for suppressing non-radiative recombination of MA-free WBG perovskite. The device showed a record PCE of 23.35%, a high V OC of 1.3 V and the impressive stability.
Topics & Concepts
Perovskite (structure)RecombinationHeterojunctionMaterials scienceBand gapOptoelectronicsNon-radiative recombinationCharge (physics)Chemical engineeringChemistryPhysicsSemiconductor materialsSemiconductorQuantum mechanicsEngineeringGeneBiochemistryPerovskite Materials and ApplicationsOrganic Light-Emitting Diodes ResearchConducting polymers and applications