一种具有高显色指数和低色温的多区域白色有机发光二极管。

A multi-zoned white organic light-emitting diode with high CRI and low color temperature.

作者信息

Zhang Tao, He Shou-Jie, Wang Deng-Ke, Jiang Nan, Lu Zheng-Hong

机构信息

Department of Physics, Yunnan University, Kunming, Yunnan 650091, People's Republic of China.

Yunnan Key Laboratory for Micro/Nano Materials &Technology, Yunnan University, Kunming, Yunnan 650091, People's Republic of China.

出版信息

Sci Rep. 2016 Feb 4;6:20517. doi: 10.1038/srep20517.

DOI:10.1038/srep20517

PMID:26842934

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4740810/

Abstract

White organic light emitting diodes (WOLEDs) is becoming a new platform technology for a range of applications such as flat-panel displays, solid-state lightings etc., and are under intensive research. For general solid-state illumination applications, a WOLED's color rendering index (CRI) and correlated color temperature (CCT) are two crucial parameters. This paper reports that WOLED device structures can be constructed using four stacked emission layers which independently emit lights at blue, green, yellow and red color respectively. The intensity of each emission layer is then engineered by funneling excitons to the targeted emission layer to achieve an ultrahigh 92 CRI at 5000 cd/m(2), and to reduce CCT to below 2500 K.

摘要

白色有机发光二极管（WOLEDs）正成为用于一系列应用（如平板显示器、固态照明等）的新型平台技术，并且正处于深入研究之中。对于一般的固态照明应用，WOLED的显色指数（CRI）和相关色温（CCT）是两个关键参数。本文报道了可以使用四个堆叠的发光层构建WOLED器件结构，这四个发光层分别独立发射蓝色、绿色、黄色和红色光。然后，通过将激子引导至目标发光层来设计每个发光层的强度，以在5000 cd/m²时实现高达92的超高显色指数，并将相关色温降低至2500 K以下。