Blue-emitting NH4+-doped MAPbBr3 perovskite quantum dots with near unity quantum yield and super stability
Jidong Deng1, Jiao Xun, Youcheng Qin
1Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China. herx@swu.edu.cn.
Chemical Communications (Cambridge, England)
|October 6, 2020
Abstract:
Novel NH4+-doped MA1-x(NH4)xPbBr3 perovskite quantum dots were synthesized at room temperature. The introduction of NH4+ results in larger lattice formation energy and better crystallinity of MA1-x(NH4)xPbBr3, which greatly reduces the defect density and inhibits non-radiative recombinations, and thus helps in achieving excellent stability and near unity blue-emitting photoluminescence quantum yields.
