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Proceedings Paper

Influence of various doping consistence in EML on the optical and electronic performance of multilayer structure OLED
Author(s): Jian Zhong; Jian-bo Cheng; Wen-bin Chen; Gang Yang; Quan Jiang
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Paper Abstract

In this study, four kinds of organic light-emitting diodes were developed using vacuum deposition technique. The typical multilayer structures of OLED are ITO / CuPc(200 Å) / α-NPD(600 Å) / Alq3(400 Å) : C545T(X%) / Alq3(200 Å) /LiF(10 Å) / Al(1000 Å) , X% is the doping consistence in Emitter Layer of OLED. The value is change from 1% to 4%. In this letter, the optical and electronic performance including brightness, efficiency, spectrum etc. was change with the doping consistence. When X% is 1%, the steady voltage of device start working is lower than other structures, only 2.5V. When X% is 3%, the brightness of the device was measured to be 10,500cd times m-2 at the drive voltage 20V, CIE coordinates x=0.331, y=0.625 and maximum luminous efficiency 6.72 lm•W-1 at 5 V. When X% is 4%, the green emission spectrum peak is 550nm, almost reach 555nm (standard green spectrum peak).

Paper Details

Date Published: 23 February 2006
PDF: 9 pages
Proc. SPIE 6117, Organic Photonic Materials and Devices VIII, 61171C (23 February 2006); doi: 10.1117/12.641364
Show Author Affiliations
Jian Zhong, Univ. of Electronic Science and Technology of China (China)
Jian-bo Cheng, Univ. of Electronic Science and Technology of China (China)
Wen-bin Chen, Univ. of Electronic Science and Technology of China (China)
Gang Yang, Univ. of Electronic Science and Technology of China (China)
Quan Jiang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 6117:
Organic Photonic Materials and Devices VIII
James G. Grote; Francois Kajzar; Nakjoong Kim, Editor(s)

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