A study on the improvement of c-axis preferred orientation and electrical resistivity of ZnO thin films by two-step deposition method

2단계 증착 방법에 의한 ZnO 박막의 c-축 배향성 및 비저항 향상에 관한 연구

  • 이혜정 (한양대학교 전자전기제어계측 공학과) ;
  • 이명호 (한양대학교 전자전기제어계측 공학과) ;
  • 이진복 (한양대학교 전자전기제어계측 공학과) ;
  • 서수형 (전자재료 및 부품 연구센터) ;
  • 박진석 (한양대학교 전자전기제어계측 공학과)
  • Published : 2001.07.18

Abstract

ZnO thin films are Prepared on Si(111) substrate by RF magnetron sputtering. Two-step deposition method is proposed to obtain ZnO thin films with high c-axis (002) TC value and electrical resistivity. This method consists of the following two-step deposition procedures: 1st-deposition for 10$\sim$30 min without oxygen at 100W and 2nd-deposition with oxygen added in the range of $O_2/(Ar+O_2)$ = 10 $\sim$ 50%. SAW filters with IDT/ZnO/Si(111) configuration are also fabricated. From the frequency response characteristics, the insertion loss and the side-lobe rejection are estimated.

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