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Proceedings Paper

Improvement of OLED properties with anti-reflection coatings
Author(s): Chunling Liu; Dongmei Wang; Lei Zhao; Wenlong Jiang; Zhengkun Qin; Chunwu Wang
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Paper Abstract

An anti-reflection (AR) coating system was inserted between the anode (ITO) and the glass substrate in the red light organic electroluminescent devices (OLED) for the structure being K9/ITO/NPB (60nm)/DCJTB (0.3nm)/Alq3 (60nm)/ LiF(0.3nm)/Al. The AR film system structure was K9/TiO2/Al2O3/2-ITO, and the optical thicknesses of TiO2 and Al2O3 coatings were also quarter wave length. The results indicated that the maximum transmissivity of AR coating was by 95 %( 610nm); it increased by 8% compared with only using ITO as AR coating. The average luminance increased by about 30%, the average energy efficiency increased by about 60%, while reducing the threshold voltage of the devices. The processing is simple and high efficient, and can change AR coating structure according to the OLED device different emission wavelength, therefore, can be widely applied to the OLED devices.

Paper Details

Date Published: 15 November 2010
PDF: 7 pages
Proc. SPIE 7852, LED and Display Technologies, 78521F (15 November 2010); doi: 10.1117/12.871364
Show Author Affiliations
Chunling Liu, Jilin Normal Univ. (China)
Dongmei Wang, Jilin Normal Univ. (China)
Lei Zhao, Jilin Normal Univ. (China)
Wenlong Jiang, Jilin Normal Univ. (China)
Zhengkun Qin, Jilin Normal Univ. (China)
Chunwu Wang, Jilin Normal Univ. (China)

Published in SPIE Proceedings Vol. 7852:
LED and Display Technologies
Gang Yu; Yanbing Hou, Editor(s)

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