[1]欧清东,唐建新.有机发光器件的光学调控研究进展[J].中国材料进展,2016,(8):026-30.[doi:10.7502/j.issn.1674-3962.2016.08.07]
　OU Qingdong,TANG Jianxin.Recent Advances in Light Manipulation for Organic Light-Emitting Diodes[J].MATERIALS CHINA,2016,(8):026-30.[doi:10.7502/j.issn.1674-3962.2016.08.07]
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有机发光器件的光学调控研究进展
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2016年第8期
页码:
026-30
栏目:
特约研究论文
出版日期:
2016-08-31

文章信息/Info

Title:
Recent Advances in Light Manipulation for Organic Light-Emitting Diodes
作者:
 欧清东; 唐建新
苏州大学功能纳米与软物质研究院 苏州纳米科技协同创新中心
Author(s):
OU Qingdong;  TANG Jianxin
Institute of Functional Nano & Soft Materials, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University
关键词:
有机发光器件; 光学调控; 光取出
DOI:
10.7502/j.issn.1674-3962.2016.08.07
文献标志码:
A
摘要:
有机发光器件已经在全彩显示屏、可穿戴设备以及环境友好的室内照明领域获得了越来越高的关注度。近年来，材料设计、器件结构、以及制备工艺的革新，推动OLED器件性能在大面积、高效率、长寿命和高显色指数方面取得了一系列突破性的进展。光学耦合效率是影响OLED器件的光电转换过程的关键因素之一，如何调控光学耦合、避免器件内部的光子流失、提高出光效率，对于发展高效率高稳定OLED技术具有重要意义。本文将围绕光学调控技术在波长依赖性、出光角度敏感性以及制备工艺兼容性方面，系统分析OLED器件中光学损耗机制，探讨近年来国内外在OLED的微纳结构光学调控的研究进展，并介绍最新发展的软纳米压印仿生微纳结构光学耦合调控方法。此光调控技术实现了绿光OLED器件效率达到366 cd/A、白光OLED效率达到123.4 lm/W、柔性白光OLED效率达到106 lm/W，为新型OLED的光学调控提供了新思路。
Abstract:
Organic light-emitting diodes (OLEDs) have gained increasing significance in applications of full-color display panels, wearable intelligent electronics, and eco-friendly interior lighting. Recently, the innovation of material design, device structure, and manufacturing technology has enabled OLED device performance to reach a new stage in terms of large area, long lifetime, high efficiency and color rendering index. Light out-coupling plays a critical role in determining the efficiency of electron-photon conversion processes, so it is of great importance in developing efficient and stable OLEDs to optically manipulating light generated and avoiding intrinsic mode loss. In this review, we emphasize the strategies of light manipulation from the perspective of wavelength dependency, angle sensitivity, and compatibility with device fabrication. Various optical loss channels are analyzed first. Recent developments of mico/nanostructure-stimulated light out-coupling for OLEDs are then overviewed. At last, we introduce our newly developed light manipulation technique using bio-inspired moth-eye nanostructures via soft nanoimprint lithography. This technique enables extremely high current efficiency of 366 cd A-1 for green OLED, power efficiencies of 123.4 lm W-1 and 106 lm W-1 for glass and plastic based white OLEDs respectively, which is expected to help accelerate the commercialization of large-scale and low-cost OLED panels and provide scientific inspiration to advanced device architecture design.
更新日期/Last Update: 2016-07-29