Low-temperature architecture of a cubic-phase CsPbBr<sub>3</sub> single crystal for ultrasensitive weak-light photodetectors
Xiangfeng Wei, Han Liu, Zhixiang Zhang, Wenchao Xu, Wenjun Huang, Lin‐Bao Luo, Jiehua Liu
Abstract
We present the first report of a water-regulated method for obtaining a cubic-phase CsPbBr3 single crystal that could be frozen at low temperature with a CsBr/PbBr2 ratio of 1 : 1. The cubic CsPbBr3 single-crystal photodetector exhibits a superior responsivity of 278 A W-1, an EQE of 6.63 × 104%, and an ultrahigh detectivity of 4.36 × 1013 Jones under low-power 520 nm irradiation at 3 V.
Topics & Concepts
PhotodetectorResponsivitySingle crystalMaterials sciencePhase (matter)Crystal (programming language)CrystallographyOptoelectronicsAnalytical Chemistry (journal)ChemistryComputer scienceOrganic chemistryProgramming languageChromatographyPerovskite Materials and ApplicationsOptical properties and cooling technologies in crystalline materialsSolid State Laser Technologies