廖良生教授课题组在Advanced Functional Materials上发表论文

发布时间:2019-03-22访问量:14设置

题目:

High-Quality White Organic Light-Emitting DiodesComposed of Binary Emitters with Color Rendering IndexExceeding 80 by Utilizing Color Remedy Strategy

作者:

Xun Tang1, Xiang-Yang Liu1, Zuo-Quan Jiang1,*, and Liang-Sheng Liao1,2,*

单位:

1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren’ai Road, Suzhou, Jiangsu 215123, P. R. China

2Institute of Organic Optoelectronics Jiangsu Industrial Technology Research Institute (JITRI), Wujiang, Suzhou, Jiangsu 215211, P. R. China

摘要:

Implementing rigorous standards for high-quality white organic light-emittingdiodes (WOLEDs) demands further investigation. Herein, a novel and feasiblecolor remedy strategy (CRS) is proposed in WOLEDs composed of binary emitters,to arouse the green-emission, thereby complementing the spectraldeficiency in white-emission. Thus, the color rendering indexes (CRIs) ofbinary-emissive WOLEDs can be boosted from 63 to 80 threshold, and theCommission International de I’Eclairage-(x, y) coordinates are preciselylocated inside the American National Standard Institute quadrangles, whichcan rival the WOLEDs integrating ternary or more emitters. Moreover, it ismore feasible for CRS-based binary-emissive system to tune white-emission from cool white-emission (correlated color temperature (CCT)5000 K) to eye-friendly warm white-emission (CCT2000 K). Meanwhile, benefiting from the reduced energy loss and low driving voltage of CRS zone, all of theCRS-based WOLEDs with diverse CCTs can exceed 20% external quantumefficiency, and the highest approach 25%, as well as the highest power efficiencybeyond 60 lm W-1, which is comparable with those reported employing light extractingtechniques. In addition, it is evident that CRS-based WOLEDs alsoexhibit outstanding color stability within the variation of luminance in severalorders of magnitude (50–12 000 cd m-2). Thus, this novel CRS provides aninnovative pathway to fabricate high-quality WOLEDs composed of binaryemitters.

影响因子:

13.325

分区情况:

一区

链接:

https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201807541

责任编辑:向丹婷

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