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苏州大学 功能纳米与软物质研究院, 江苏 苏州 215123
Published:05 January 2023,
Received:30 August 2022,
Revised:12 September 2022,
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曲志浩,蔡嘉恒,周东营等.高效有机发光二极管的光提取技术及其研究进展[J].发光学报,2023,44(01):163-173.
QU Zhihao,CAI Jiaheng,ZHOU Dongying,et al.Advances in Highly Effective Light Extraction Schemes for Organic Light-emitting Diodes[J].Chinese Journal of Luminescence,2023,44(01):163-173.
曲志浩,蔡嘉恒,周东营等.高效有机发光二极管的光提取技术及其研究进展[J].发光学报,2023,44(01):163-173. DOI: 10.37188/CJL.20220314.
QU Zhihao,CAI Jiaheng,ZHOU Dongying,et al.Advances in Highly Effective Light Extraction Schemes for Organic Light-emitting Diodes[J].Chinese Journal of Luminescence,2023,44(01):163-173. DOI: 10.37188/CJL.20220314.
高性能材料研究使有机发光二极管(Organic light⁃emitting diode,OLED)取得了突飞猛进的发展,但是器件内部生成的光子由于光学损耗无法全部发射到外部空间,从而极大地降低了OLED效率,并阻碍了其在节能照明市场的应用。通过调控光损失区域的波传导,光提取技术能够有效抑制衬底、波导、表面等离子激元等损耗模式,理论上可使效率扩大4倍。具有1.05~2倍扩大效果的光提取技术已被大量报道,但与理论极限仍存在很大差距。为此,本文简要分析了OLED光学损耗模式,综述了近年来高效的、特别是能实现2倍以上扩大效果的光提取技术。
Researches in advanced and efficient materials have greatly promoted the fast development of organic light-emitting diodes (OLEDs). However, the generated photons inside the device can not completely escape into the external field due to the inherent optical losses, which greatly reduces the electroluminescence efficiency of OLEDs and hinders the commercialization progress of OLEDs for lighting applications. By manipulating the light propagation in the vicinity of optical losses, light extraction schemes could efficiently suppress the substrate mode, the waveguide mode, and the surface plasmon polariton mode, leading to a maximum enhancement factor of 4 in theory. A large number of reported light extraction strategies could improve the OLED efficiency by 1.05-2 times, but still lag behind the theorical limit. With this regard, we briefly introduce the optical loss mechanism in OLEDs and summarize the recent progresses of highly effective light extraction technologies particularly with the promising enhancement factor of above 2.
有机发光二极管光提取波导模式微纳结构
organic light-emitting diodeslight extractionwaveguide modemicro-nano structure
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