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-Yu1,2;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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