Fluoride-assisted crystallization regulation enables efficient and stable wide-bandgap perovskite photovoltaic
Chao Su, Rui Wang, Junlei Tao, Jinliang Shen, Di Wang, Lixin Wang, Guangsheng Fu, Shaopeng Yang, Mingjian Yuan, Tingwei He
Abstract
We introduce BF 4 − into a wide-bandgap perovskite system to regulate the crystallization dynamics, and the reduced crystallization rate eliminates halogen vacancy defects. The resulting PSC achieves a PCE of 20.09% and improved operational stability.
Topics & Concepts
CrystallizationPerovskite (structure)Band gapMaterials sciencePhotovoltaic systemFluorideVacancy defectOptoelectronicsChemical engineeringCrystallographyChemistryInorganic chemistryElectrical engineeringEngineeringPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyQuantum Dots Synthesis And Properties