Lanthanide ion doping enabling highly sensitive and stable all-inorganic CsPbI<sub>2</sub>Br perovskite photodetectors
Zhiyuan Fang, Nan Ding, Wen Xu, Tianyuan Wang, Yue Wang, Lu Zi, Junhua Hu, Siyu Lu, Donglei Zhou, Xue Bai, Hongwei Song
Abstract
We introduce Ln 3+ ions into all-inorganic CsPbI 2 Br films. Photodetectors based on CsPbI 2 Br:Yb 3+ films achieve a D * of 4.6 × 10 12 Jones, a detection range of 300–700 nm, quick response time (640 ns) and good stability.
Topics & Concepts
PhotodetectorMaterials scienceDopingPerovskite (structure)LanthanideIonRange (aeronautics)OptoelectronicsCrystallographyChemistryComposite materialOrganic chemistryPerovskite Materials and Applications2D Materials and ApplicationsOptical properties and cooling technologies in crystalline materials