Stable Zn-doped CsPbBr3 NCs glasses toward an enhanced optical performance for WLED

被引：42

作者：

Ding, Ling ^{[1
]}

Liu, Shengnan ^{[1
]}

Zhang, Zelong ^{[1
]}

Shao, Guangzhan ^{[1
]}

Xiang, Weidong ^{[1
]}

Liang, Xiaojuan ^{[1
]}

机构：

[1] Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 17期

基金：

中国国家自然科学基金;

关键词：

CsPb1-xZnxBr3; NCs; Glass; Environment friendly; White LED; PEROVSKITE QUANTUM DOTS; CSPBX3; X; NANOCRYSTALS; EFFICIENT; SUBSTITUTION; STABILITY; BR; EMISSION; CI;

D O I：

10.1016/j.ceramint.2019.07.307

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Inorganic perovskite nanocrystals (NCs) doped with metal ions have received much attention due to their superior optoelectronic properties and environment friendly. Here, we synthesized Zn-doped CsPbBr3 perovskite NCs in borosilicate glass by melt-quenching. When ZnBr2 and PbBr2 were in half, the fluorescence intensity was enhanced, and the PLQYs increased from 32 to 36%. Under the excitation of 460 nm blue chip, white LED (WLED) was fabricated by using Zn-doped CsPbBr3 NCs glass and red phosphor powder CaAlSiN3:Eu2+. The experimental results show that the photoelectric parameters of the constructed white LED are considerable, among which the luminous efficacy (LE) is 70.1 lm/W, and a high LE is 72.79. However, pure CsPbBr3 has a low LE value of 26.1 lm/W and a CRI value of 76.9 Zn2+ doped CsPbBr3 can reduce the toxicity of materials and can be used to prepare high-performance optical devices. The study showed a new doped chemical model system for various optoelectronic applications.

引用

页码：22699 / 22706

页数：8

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