Interface and grain boundary passivation for efficient and stable perovskite solar cells: the effect of terminal groups in hydrophobic fused benzothiadiazole-based organic semiconductors
Yanbo Gao, Yanjie Wu, Yue Liu, Min Lu, Lili Yang, Yinghui Wang, William W. Yu, Xue Bai, Yù Zhang, Qilin Dai
Abstract
, thus realizing simultaneous up-bottom passivation of perovskite films. Finally, the BTP-4F passivated PSCs exhibit a remarkable PCE of 22.16%, and the device can maintain ∼86% of the initial PCE after 5000 h. Therefore, this work presents significant potential of organic semiconductors in PSCs toward high efficiency and high stability due to the terminal groups.
Topics & Concepts
PassivationGrain boundaryTerminal (telecommunication)Perovskite (structure)SemiconductorOrganic semiconductorMaterials scienceInterface (matter)OptoelectronicsChemistryNanotechnologyCrystallographyLayer (electronics)Composite materialComputer scienceTelecommunicationsMicrostructureCapillary numberCapillary actionPerovskite Materials and ApplicationsConducting polymers and applicationsOrganic Electronics and Photovoltaics