有机发光器件的光学调控研究进展

发布时间：2018-08-16 16:34

【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多的关注。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进展。光学耦合效率是影响OLED器件中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、高稳定的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,综述近年来国内外在OLED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~(-1)、白光OLED效率达到123.4 lm·W~(-1)、柔性白光OLED效率达到106 lm·W~(-1),为新型OLED的光学调控提供了新思路。
[Abstract]:Organic light emitting devices (OLEDs) have attracted more and more attention in the fields of full color display, wearable devices and environmental friendly indoor lighting. In recent years, the innovation of material design, device structure and fabrication technology has led to a series of breakthroughs in the performance of OLED devices in large area, high efficiency, long life and high color rendering index. Optical coupling efficiency is one of the key factors affecting the photoelectric conversion process in OLED devices. How to control optical coupling, avoid the loss of photons inside the device, and improve the optical efficiency is of great significance for the development of high efficiency and high stability OLED technology. In this paper, the optical loss mechanism in OLED devices is systematically analyzed in terms of wavelength dependence, optical angle sensitivity and fabrication process compatibility of optical control techniques. Recent advances in optical regulation of OLED microstructures at home and abroad are reviewed. The optical coupling control method of soft nano imprint bionic micro-nano structure is introduced. The efficiency of green OLED device, white light OLED and flexible white light OLED are 366cd A-1, 123.4 lmW-1 and 106lmW-1, respectively, which provide a new idea for optical control of new OLED.
【作者单位】：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;
【基金】：国家自然科学基金资助项目(91433116,11474214) 科技部“973”计划项目(2014CB932600)
【分类号】：TN383.1

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