Room-temperature Synthesis of Quasi-2D CsPbBr3 Nanoplatelets with Ultrapure Green Light Emissions

被引：0
|
作者：
Shen Y. [1 ,2 ]
Han B. [2 ]
Jin Z. [1 ]
Hu Y. [1 ]
Zeng H. [2 ]
机构：
[1] Department of Materials Science and Engineering, Suqian University, Suqian
[2] College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2023年 / 44卷 / 03期
关键词：
CsPbBr[!sub]3[!/sub] perovskite; nanoplatelets; ultrapure green photoluminescence; WLED;
D O I：
10.37188/CJL.20220219
中图分类号：
学科分类号：
摘要：
A facile ligand-assisted solution process was proposed to synthesize quasi-2D CsPbBr3 perovskite nanoplatelets（NPs）with ultrapure green photoluminescence（PL）at room temperature. The as-synthesized CsPbBr3 NPs exhibit an ideal emission peak at 526 nm with a narrow FWHM of 16 nm and a high photoluminescence quantum yield（PLQY）of 87%. As a green downconverter，the CsPbBr3 NP shows a CIE coordinate at（0.145，0.793）and covers 91% of the Rec. 2020 standard in the CIE 1931 color space，which was much better than that of all the present green phosphors. Moreover，a WLED was successfully fabricated based on these ultrapure green light-emitting CsPbBr3 NPs，which exhibits a luminous efficiency 39 lm/W with a CIE（0.33，0.29）under a 20 mA driving current. © 2023 Chines Academy of Sciences. All rights reserved.
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页码：508 / 517
页数：9
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