材料科学
量子点
光电子学
二极管
发光二极管
表征(材料科学)
白光
光学
自发辐射
激光器
物理
作者
Qinghua Li,Bai Jinke,Bu Cuiying,Cui Zimei,Huang Jiyan,Nie Xuerong,Xiao Jin,Bing Xu
出处
期刊:Optics Express
[The Optical Society]
日期:2023-10-09
卷期号:31 (22): 36691-36691
被引量:1
摘要
Whole visible range emitting CuInS 2 /ZnS QDs were obtained with broad band-width and high luminous efficiency by altering the Cu/In ratio and coating ZnS layer. 1-Dodecanethiol (DDT) as a sulfur source in the ZnS coating process can inhibit the lattice defects caused by Zn 2+ inter-diffusion, thus increasing the photoluminescence quantum yield (PL QY). Then the stability and lighting performance of white light-emitting diodes (WLEDs) based on these CuInS 2 /ZnS QDs were characterized. The optimized WLED device exhibited a moderate luminous efficacy (LE) (70.33 lm·W -1 ) and ultrahigh color qualities (CRI Ra = 92.7, R9 = 95.9, R13 = 96.3) with warm white at a correlated color temperature (CCT) of 4052 K.
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