Cd2+-doped Cs2ZnCl4 Yellow-emitting Phosphor and Its Optical Properties

被引：0

作者：

Zhang W. ^{[1
,2
]}

Zheng W. ^{[1
,3
]}

Li L. ^{[2
]}

Huang P. ^{[1
,3
]}

Chen X. ^{[1
,3
]}

机构：

[1] CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou

[2] Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou

[3] Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2023年 / 44卷 / 03期

基金：

中国国家自然科学基金;

关键词：

cadmium doping; Cs[!sub]2[!/sub]ZnCl[!sub]4[!/sub; excited-state dynamics; metal halide; photoluminescence;

D O I：

10.37188/CJL.20220344

中图分类号：

学科分类号：

摘要：

All-inorganic zero-dimensional(0D)metal halides, owing to their intriguing optical properties and easy solution processibility, are emerging as a new generation of luminescent materials and as an alternative to lead halide perovskites for various applications such as solid-state lighting and photodetectors. Herein, a new yellow phosphor is developed based on Cd2+-doped Cs2ZnCl4, which exhibits intense broadband and long-lived(11. 4 ms)photoluminescence(PL)at 565 nm upon 270 nm excitation, with a PL quantum yield up to 46. 0%. Temperature-dependent PL spectroscopic analyses reveal that the broadband PL originates from the forbidden 3E→1A1 transition of Cd2+. Specifically, localized exciton emission is observed at low temperatures below 170 K, in parallel with efficient energy transfer from the localized excitons to Cd2+. Besides, the phosphor displays an excellent anti-thermal quenching property, remaining 90% PL intensity at 150 ℃ in comparison with that at room temperature. These findings provide not only new insights into the excited-state dynamics of Cd2+ in metal halides, but also a new avenue for the exploration of novel and efficient luminescent materials based on 0D metal halides. © 2023 Chines Academy of Sciences. All rights reserved.

引用

页码：518 / 527

页数：9

共 63 条

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