Reduced ambient reflection of organic light-emitting diodes by utilizing multilayer low-reflection cathodes

doi:10.1088/0268-1242/21/8/017

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	Reduced ambient reflection of organic light-emitting diodes by utilizing multilayer low-reflection cathodes
	Xie, Zhi-yuan; Zhao, Yun; Niu, Xiao-di
刊名	SEMICONDUCTOR SCIENCE AND TECHNOLOGY
	2006-08-01
卷号	21 期号:8 页码:1077-1082
ISSN号	0268-1242
DOI	10.1088/0268-1242/21/8/017
英文摘要	Ambient reflection of organic light-emitting diodes (OLEDs) is reduced by utilizing a multilayer low-reflection cathode. The low-reflection cathode structure consists of a semitransparent cathode layer, a transparent spacing layer and a high reflective layer. Metals with different optical properties, including silver (Ag) and samarium (Sm), are used as the semitransparent cathode layer, tris(8-quinolinolato) aluminium (Alq(3)) and aluminium (Al) are used as the spacing layer and high reflective layer, respectively. The incident ambient light could be reduced by the cathode structure via destructive optical interference. It is found that the Ag/Alq(3)/Al cathode shows a strong wavelength-dependent reflection. However, the Sm/Alq(3)/Al cathode demonstrates a low reflection in the whole visible range, and the resulting OLED shows a reduced luminous reflectance of 2.7% as compared to 81% for a control device with LiF/Al cathode. A further reduction to 0.9% is realized by replacing a multilayer of Alq(3)/Sm/Alq(3) for the single layer of Alq(3). Moreover, such a structure shows a weak dependence of reflectance on the wavelength and incident angle of ambient light.
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000240123100018
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/57903]
专题	中国科学院化学研究所
通讯作者	Xie, Zhi-yuan
作者单位	Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Xie, Zhi-yuan,Zhao, Yun,Niu, Xiao-di. Reduced ambient reflection of organic light-emitting diodes by utilizing multilayer low-reflection cathodes[J]. SEMICONDUCTOR SCIENCE AND TECHNOLOGY,2006,21(8):1077-1082.
APA	Xie, Zhi-yuan,Zhao, Yun,&Niu, Xiao-di.(2006).Reduced ambient reflection of organic light-emitting diodes by utilizing multilayer low-reflection cathodes.SEMICONDUCTOR SCIENCE AND TECHNOLOGY,21(8),1077-1082.
MLA	Xie, Zhi-yuan,et al."Reduced ambient reflection of organic light-emitting diodes by utilizing multilayer low-reflection cathodes".SEMICONDUCTOR SCIENCE AND TECHNOLOGY 21.8(2006):1077-1082.