光致发光
材料科学
色度
电致发光
显色指数
光电子学
兴奋剂
发光二极管
钐
钙钛矿(结构)
量子产额
二极管
荧光粉
纳米晶
色温
光学
纳米技术
化学
无机化学
物理
结晶学
荧光
图层(电子)
作者
Rui Sun,Po Lu,Donglei Zhou,Wen Xu,Nan Ding,He Shao,Yù Zhang,Dongyu Li,Nan Wang,Xinmeng Zhuang,Biao Dong,Xue Bai,Hongwei Song
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2020-05-27
卷期号:5 (7): 2131-2139
被引量:178
标识
DOI:10.1021/acsenergylett.0c00931
摘要
Photoluminescence (PL) of rare earth (RE) ions has been observed in RE ion-doped perovskite nanocrystals (PeNCs); however, the electroluminescence (EL) originating from the RE ions is still not achieved in perovskite light-emitting diodes (PeLEDs). Herein, we demonstrate the first observation of EL from the PeLEDs based on Sm3+-doped CsPbCl3 PeNCs, which is realized by benefiting from the as-prepared Sm3+-doped CsPbCl3 PeNCs with photoluminescence quantum yield (PLQY) as high as 85% synthesized through a modified hot-injection method. The color of the EL can be modulated from the blue to the orange spectral region by varying the Sm3+ ion doping concentration. Therefore, the single-component white light-emitting PeLEDs with chromaticity coordinate (CIE) of (0.32, 0.31), a maximum luminance of 938 cd/m2, EQE of 1.2%, and color rendering index (CRI) of 93 are realized, which are desirable results for practical application. This work demonstrates the unique application of RE-doped PeNCs and provides a strategy for devices using white light PeLEDs.
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