Highly efficient and blue-emitting CsPbBr3 quantum dots synthesized by two-step supersaturated recrystallization. (13th January 2021)

• Record Type: Journal Article
• Authors: Shu, Bowang; Chang, Yajing; Xu, Enze; Yang, Supeng; Zhang, Jinhua; Jiang, Yang; Cheng, Xiaopeng; Yu, Dabin
• Is Part Of: Nanotechnology. Volume 32:Number 14(2021)
• Publication Date: 2021-01-13
• Subjects: CsPbBr3 quantum dots -- supersaturated recrystallization -- photo-luminescence quantum yield -- blue-emitting; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/abcc21
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Highly efficient and blue-emitting CsPbBr3 quantum dots were successfully synthesized by two-step supersaturated recrystallization under ambient condition. This method could control the particle size within 2.8 nm, thus resulting in strong quantum confinement effect of the products. The as-synthesized CsPbBr3 quantum dots presented outstanding optical properties with highest photo-luminescence quantum yield of 87.20% and longest PL lifetime of 12.24 ns. The blue light-emitting diode made from the CsPbBr3 quantum dots exhibited a CIE coordinate (0.14, 0.10), in good agreement with the standard blue CIE coordinate (0.14, 0.08) of National Television System Committee (NTSC).