Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on the Electrical Characteristics of Organic Thin Film Transistor using Photoacryl as Gate Dielectric Layer

Photoacryl을 게이트 절연층으로 사용한 유기 박막트랜지스터의 전기적 특성에 관한 연구

  • 김윤명 (홍익대학교 전기정보제어공학과) ;
  • 표상우 (홍익대학교 전기정보제어공학과) ;
  • 김준호 (홍익대학교 전기정보제어공학과) ;
  • 신재훈 (홍익대학교 전기정보제어공학과) ;
  • 김영관 (홍익대학교 전기정보제어공학과) ;
  • 김정수 (홍익대학교 전기정보제어공학과)
  • Published : 2002.02.01
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Abstract

Organic thin film transitors(OTFT) are of interest for use in broad area electronic applications. And recently organic electroluminescent devices(OELD) have been intensively investigated for using in full-color flat-panel display. We have fabricated inverted-staggered structure OTFTs at lower temperature using the fused-ring polycyclic aromatic hydrocarbon pentacene as the active eletronic material and photoacryl as the organic gate insulator. The field effect mobility is 0.039∼0.17 ㎠/Vs, on-off current ratio is 10$\^$6/, and threshold voltage is -7V. And here we report the study of driving emitting, Ir(ppy)$_3$, phosphorescent OELD with all organic thin film transistor and investigated its electrical characteristics. The OELD with a structure of ITO/TPD/8% Ir(ooy)$_3$ doped in BCP/BCP/Alq$_3$/Li:Al/Al and OTFT with a structure of inverted-stagged Al(gate electrode)/photoacry(gate insulator)/pentacene(p-type organic semiconductor)/ Au(source-drain electrode) were fabricated on the ITP patterned glass substrate. The electrical characteristics are turn-on voltage of -10V, and maximum luminance of about 90 cd/㎡. Device characteristics were quite different with that of only OELD.

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