Mitigating deep-level defects through a self-healing process for highly efficient wide-bandgap inorganic CsPbI<sub>3−<i>x</i></sub>Br<sub><i>x</i></sub> perovskite photovoltaics
Jun Liu, Ming Wang, Jinhong Lin, Guojie Chen, Baoxing Liu, Jincheng Huang, Meng Zhang, Guangxing Liang, Lei Lü, Ping Xu, Bingbing Tian, Hoi Sing Kwok, Guijun Li
Abstract
Thermal admittance spectroscopy is used to explain the self-healing process in the wide bandgap inorganic CsPbI 3− x Br x . It is revealed that the deep-level interstitial defects in the fresh film can be self-healed when stored in a low-humidity ambient condition.
Topics & Concepts
Band gapPerovskite (structure)PhotovoltaicsMaterials scienceOptoelectronicsPhotovoltaic systemCrystallographyChemistryElectrical engineeringEngineeringPerovskite Materials and ApplicationsChalcogenide Semiconductor Thin FilmsQuantum Dots Synthesis And Properties