物理化学学报2017，Vol.33Issue(8)：1548-1572,25.DOI:10.3866/PKU.WHXB201704283
有机发光二极管光取出技术进展
Progress of Light Extraction Technology for Organic Light-Emitting Diodes
摘要
Abstract
Organic light-emitting diodes (OLEDs) have been developing rapidly in terms of materials and design over the past 30 years.They have been applied on large scales in displays,especially in high-end smartphones.However,in the field of lighting,the industry is not sufficiently mature because of the low efficiency,short life,and high cost of OLEDs.The main reason for this is that the optical waveguide effect and surface plasmon losses lead to the consumption of most of the optical energy coupled to the non-radiative thermal energy,resulting in a huge gap between the internal and external quantum efficiency.It is also one of the main causes for the poor efficiency and longevity.Therefore,it is necessary to recover the part of the light trapped inside OLED lighting devices via light extraction technology.In this paper,we introduce optical analytic methods for OLEDs by analyzing the four modes of light coupling channels and the mechanisms of light energy loss based on the ray-optical model.Then,based on the research achievements of some scientific institutions and recent representative patents in the industry,we summarize the relevant light extraction technology considering two aspects:external light extraction and internal light extraction.Finally,we discuss the development route and prospects of the light extraction technology.关键词
有机发光二极管/发光效率/耦合效率/内光取出/外光取出Key words
Organic light-emitting diode/Luminous efficiency/Out-coupling efficiency/Internal light extraction/External light extraction分类
化学化工引用本文复制引用
蓝露华,陶洪,李美灵,高栋雨,邹建华,徐苗,王磊,彭俊彪..有机发光二极管光取出技术进展[J].物理化学学报,2017,33(8):1548-1572,25.基金项目
The project was supported by the National Key Basic Research and Development Program of China (2016YFB0401005,2016YFF0203603),National Natural Science Foundation of China (61401156),Special Support Program of Guangdong,China (2014TQ01C321),China Post-Doctoral Science Foundation (2015M582380,2016M590779) and Pear River S&T Nova Program of Guangzhou,China (201506010015,201505051412482,201710010066).国家重点研发专项(2016YFB0401005,2016YFF0203603),国家自然科学基金(61401156),广东省特支计划科技创新青年拔尖人才项目(2014TQ01C321),中国博士后科研基金(2015M582380,2016M590779),广州市珠江科技新星专项(201506010015,201505051412482,201710010066)资助 （2016YFB0401005,2016YFF0203603）
