Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A study on Improvement of OLEDs luminance property using PEDOT:PSS

PEDOT:PSS를 이용한 OLEOs의 발광 특성 향상에 관한 연구

  • Kim, Dong-Eun (Department of Electrical Engineering, Dong-A University) ;
  • Kim, Byoung-Sang (Department of Electrical Engineering, Dong-A University) ;
  • Kim, Doo-Seok (National Center for Nanomaterials Technology, Pohang University of Science and Technology) ;
  • Kwon, Oh-Kwan (Department of Electrical Engineering, Dong-A University) ;
  • Lee, Burm-Jong (Department of Chemistry, Inje University) ;
  • Kwon, Young-Soo (Department of Electrical Engineering, Dong-A University)
  • Published : 2006.07.12
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Abstract

OLEDs based on organic thin films are similar to semiconductor base light-emitting diodes in that they were also considered to be one of the next generation flat-panel displays. They are attractive because of low-operating voltage, low power consumption, ease of fabrication, and low cost. In this study, we used poly (3,4-ethylenedioxythiophene)/poly (4-styrenesulfonate) (PE DOT : PSS) as a hole injection layer. In this experiment spin coating method was used with various speed rate. The fundamental structure of the OLEDs was ITO/PEDOT:PSS/NPB/$Alq_3$/Al. As a result, we obtained the enhancement performance of OLEDs when the spin coating speed was 4000 rpm. We obtained a maximum luminance of 24334 $cd/m^2$ at a current density of 967 $mA/cm^2$.

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