반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
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ITO/glass 기판 전처리와 음극 전극 증착방법에 따른 OLED 수명 특성

Characteristics of OLED Lifetime by ITO/glass Substrate Pre-treatment and Cathode Deposition Methods

  • 신세진 (단국대학교 전자공학과) ;
  • 장지근 (단국대학교 전자공학과) ;
  • 김민영 (백석문화대학 컴퓨터정보학부)
  • Shin, Se-Jin (Department of Electronics Engineering, Dankook University) ;
  • Jang, Ji-Geun (Department of Electronics Engineering, Dankook University) ;
  • Kim, Min-Young (Division of Computer Information, Baekseok college of cultural studies)
  • 발행 : 2008.06.30
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초록

The Lifetime of OLEDs by ITO/glass substrates cleaning method and cathode deposition method were investigated in the fabrication of green light emitting OLEDs with $Alq_3$-C545T fluorescent system. In our experiments, the optimum cleaning method was obtained at last processing of boiling IPA(isopropyl alcohol). And the optimum deposition methode was obtained at 3 steps deposition rate of Al. The deposition rate of 3 steps progressed changing from $0.5\AA$/sec to $3\AA$/ sec. The green light emitting OLED with plasma treatment at 150W for 2 minutes showed the highest luminance and efficiency of 20000 cd/$m^2$ and 16 lm/W. On the contrary, the OLED device without plasma treatment showed much lower performance with the luminance and efficiency of 3500 cd/$m^2$ and 2 lm/W.

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