Two-Stage Ultraviolet Degradation of Perovskite Solar Cells Induced by the Oxygen Vacancy-Ti4+ States
Jun Ji, Xin Liu, Haoran Jiang, Mingjun Duan, Benyu Liu, Hao Huang, Dong Wei, Yingfeng Li, Meicheng Li
Abstract
states, which can be realized by polyethyleneimine ethoxylated (PEIE) modified layer. The optimized devices remain ∼75% of its initial efficiency (20.51%) under UV irradiation at 72 days, whereas the normal devices fail completely.
Topics & Concepts
Degradation (telecommunications)UltravioletPerovskite (structure)Stage (stratigraphy)OxygenMaterials scienceVacancy defectChemistryEngineering physicsPhotochemistryChemical engineeringPhysicsOptoelectronicsComputer scienceCrystallographyGeologyTelecommunicationsPaleontologyOrganic chemistryEngineeringPerovskite Materials and ApplicationsChalcogenide Semiconductor Thin Films