Improving the performance of lead-free Cs<sub>2</sub>AgBiBr<sub>6</sub> double perovskite solar cells by passivating Br vacancies
Junjie Chen, Xingyu Ma, Li Gong, Conghua Zhou, Jianlin Chen, Yangfan Lu, Maojun Zhou, Haiping He, Zhizhen Ye
Abstract
Targeted passivation of the easily formed deep level defect V Br by introducing 4% HBr results in an enhancement of PCE. This work enriches the study on the passivation of intrinsic point defects in Cs 2 AgBiBr 6 .
Topics & Concepts
PassivationMaterials sciencePerovskite (structure)Crystallographic defectLead (geology)OptoelectronicsWork (physics)NanotechnologyChemical engineeringCrystallographyLayer (electronics)ThermodynamicsChemistryGeomorphologyPhysicsGeologyEngineeringPerovskite Materials and ApplicationsChalcogenide Semiconductor Thin FilmsSolid-state spectroscopy and crystallography