Highly efficient and blue-emitting CsPbBr3 quantum dots synthesized by two-step supersaturated recrystallization

被引：15

作者：

Shu, Bowang ^{[1
]}

Chang, Yajing ^{[1
]}

Xu, Enze ^{[2
]}

Yang, Supeng ^{[2
]}

Zhang, Jinhua ^{[1
]}

Jiang, Yang ^{[2
]}

Cheng, Xiaopeng ^{[1
]}

Yu, Dabin ^{[1
]}

机构：

[1] Natl Univ Def Technol, State Key Lab Pulsed Power Laser Technol, Hefei 230037, Anhui, Peoples R China

[2] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China

来源：

NANOTECHNOLOGY | 2021年 / 32卷 / 14期

基金：

中国国家自然科学基金;

关键词：

CsPbBr3 quantum dots; supersaturated recrystallization; photo-luminescence quantum yield; blue-emitting; PEROVSKITE NANOCRYSTALS; PHOTOLUMINESCENCE;

D O I：

10.1088/1361-6528/abcc21

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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).

引用

页数：6

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