한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제44권6호
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  • Pages.303-307
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  • 2007
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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In 도핑된 ZnO 박막의 투명 전극과 유기 발광 다이오드 특성

Transparent Anodic Properties of In-doped ZnO thin Films for Organic Light Emitting Devices

  • 박영란 (성균관대학교 물리학과 기능성나노신소재연구소) ;
  • 김용성 (성균관대학교 정보통신용 신기능성 소재 및 공정연구센터)
  • Park, Young-Ran (Department of Physics, Institute of Basic Science and Center for nanotubes and nanocomposites, Sungkyunkwan University) ;
  • Kim, Young-Sung (Advanced Material Process of Information Technology, Sungkyunkwan University)
  • 발행 : 2007.06.30
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초록

Transparent In-doped zinc oxide (IZO) thin films are deposited with variation of pulsed DC power at Ar atmosphere on coming 7059 glass substrate by pulsed DC magnetron sputtering. A c-axis oriented IZO thin films were grown in perpendicular to the substrate. The optical transmittance spectra showed high transmittance of over 80% in the UV-visible region and exhibited the absorption edge of about 350 nm. Also, the IZO films exhibited the resistivity of ${\sim}10^{-3}{\Omega}\;cm$ and the mobility of ${\sim}6cm/V\;s$. Organic Light-emitting diodes (OLEDs) with IZO/N,N'-diphenyl-N, N'-bis(3-methylphenl)-1, 1'-biphenyl-4,4'-diamine (TPD)/tris (8-hydroxyquinoline) aluminum ($Alq_3$)/LiF/Al configuration were fabricated. LiF layer inserted is used as an interfacial layer to increase the electron injection. Under a current density of $100\;mA/cm^2$, the OLEDs show an excellent efficiency (9.4 V turn-on voltage) and a good brightness ($12000\;cd/m^2$) of the emission light from the devices. These results indicate that IZO films hold promise for anode electrodes in the OLEDs application.

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참고문헌

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