Enhanced emission efficiency in doped CsPbBr<sub>3</sub> perovskite nanocrystals: the role of ion valence
Mengyu Guan, Yunlong Xie, Yupeng Wang, Zhuojie He, Lei Qiu, Jun Liu, Keqiang Chen, Shaojiu Yan, Guogang Li, Zhigao Dai
Abstract
The photoluminescence quantum yield of CsPbBr 3 nanocrystals is enhanced by reducing the bromine vacancy defects in the bulk and surface via doping divalent Sr 2+ and trivalent La 3+ with similar ionic radii and different valence states.
Topics & Concepts
Materials scienceValence (chemistry)DopingNanocrystalIonic radiusDivalentPhotoluminescenceIonVacancy defectPerovskite (structure)Quantum yieldBromineCrystallographyNanotechnologyOptoelectronicsChemistryOpticsMetallurgyPhysicsOrganic chemistryFluorescencePerovskite Materials and ApplicationsOptical properties and cooling technologies in crystalline materialsSolid-state spectroscopy and crystallography