• 제목/요약/키워드: SPLD(Separated pulsed laser deposition)

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분리형 펄스 레이져 증착법을 이용한 ZnO 박막의 특성에 관한 연구 (Preparation of High Quality ZnO Thin Films by Separated Pulsed Laser Deposition)

  • 박상무;이붕주
    • 한국전기전자재료학회논문지
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    • 제21권9호
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    • pp.818-824
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    • 2008
  • The Separated Pulsed Laser Deposition (SPLD) technique uses two chambers that are separated by a conic metallic wall with a central orifice. The pressures of ablation chamber and deposition chamber were controlled by the differential vacuum system. We deposited zinc oxide (ZnO) thin films by SPLD method to obtain high quality thin films. When the bias voltage of +500 V was applied between a substrate and an orifice, the ZnO thin film was deposited efficiently. The deposited ZnO thin film at ablation chamber gas pressure of Ar 5 mTorr showed the sharpest ultraviolet absorption edge indicatory the band gap of about 3.1 eV. ZnO thin films were deposited using effect of electric and magnetic fields in the SPLD method. E${\times}$B drift happened by an electric fields and a magnetic fields, activated plasma plume, as a result the film surface became very smooth. When the bias voltage of +500 V and magnet of 0,1 T were applied the ZnO thin films surface state showed high quality. Grain size was 41.99 nm and RMS was 0.84 nm.