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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The Etching Properties of Indium Tin Oxide Thin Films in O2/BCl3/Ar Gas Mixture Using Inductively Coupled Plasma

유도결합플라즈마를 이용한 O2/BCl3/Ar가스에 따른 Indium Tin Oxide 박막의 식각 특성 연구

  • Wi, Jae-Hyung (Department of Renewable Energy, Chung-Ang University) ;
  • Woo, Jong-Chang (School of Electrical and Electronics Engineering, Chung-Ang University) ;
  • Kim, Chang-Il (School of Electrical and Electronics Engineering, Chung-Ang University)
  • 위재형 (중앙대학교 재생에너지학과) ;
  • 우종창 (중앙대학교 전자전기공학부) ;
  • 김창일 (중앙대학교 전자전기공학부)
  • Received : 2010.07.14
  • Accepted : 2010.09.20
  • Published : 2010.10.01
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Abstract

The etching characteristics of indium tin oxide (ITO) thin films in an $O_2/BCl_3/Ar$ plasma were investigated. The etch rate of ITO thin films increased with increasing $O_2$ content from 0 to 2 sccm in $BCl_3$/Ar plasma, whereas that of ITO decreased with increasing $O_2$ content from 2 sccm to 6 sccm in $BCl_3$/Ar plasma. The maximum etch rate of 65.9 nm/m in for the ITO thin films was obtained at 2 sccm $O_2$ addition. The etch conditions were the RF power of 500 W, the bias power of 200 W, the process pressure of 15 mTorr, and the substrate temperature of $40^{\circ}C$. The analysis of x-ray photo electron spectroscopy (XPS) was carried out to investigate the chemical reactions between the surfaces of ITO thin films and etch species.

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References

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