Improved Performance by Modification of Cathode in Polymer Light-Emitting Diode Based on a Novel Se-Containing Electroluminescent Copolymer

Chin. Phys. Lett.

2003, Vol. 20

Issue (12): 2255-2258 DOI:

Original Articles

Improved Performance by Modification of Cathode in Polymer Light-Emitting Diode Based on a Novel Se-Containing Electroluminescent Copolymer

TIAN Ren-Yu^1,2;YANG Ren-Qiang¹;PENG Jun-Biao¹;CAO Yong¹

¹Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640 ²Department of Applied Physics, South China University of Technology, Guangzhou 510640

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TIAN Ren-Yu, YANG Ren-Qiang, PENG Jun-Biao et al 2003 Chin. Phys. Lett. 20 2255-2258

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Abstract The electroluminescent characteristics of polymer light-emitting diodes (PLEDs) with the structure ITO/PEDOT/ PFO-Selenophene copolymer/cathode were investigated. Various cathodes, such as Al, Li/Al, Ba/Al, LiF/Al and LiF/Ba/Al, were used for testing the device performances. The strongest light output (1112 cd/m²) and the highest quantum efficiency (0.74%) were achieved by using the LiF/Ba/Al cathode. A possible working mechanism for improving the PLED performance was discussed.

Keywords: 78.60.Fi 78.66.Qn 85.60.Jb

Published: 01 December 2003

PACS:	78.60.Fi	(Electroluminescence)
	78.66.Qn	(Polymers; organic compounds)
	85.60.Jb	(Light-emitting devices)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I12/02255

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