• Title/Summary/Keyword: Silicon thin

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플라즈마 화학증착법을 이용한 $\alpha$-Si:H박막의 제조 (Deposition of $\alpha$-Si:H thin films by PECVD method)

  • 정병후;문대규;임호빈
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1991년도 추계학술대회 논문집
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    • pp.63-67
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    • 1991
  • Amorphous silicon films were deposited on glass, [100] single crystal silicon wafer with thermally grown silicon dioxide, and [100] silicon wafer substrates by Plasma Enhanced Chemical Vapor Deposition(with argon diluted silane source gas). Growth rate, UV optical band edge, and the hydrogen quantity in the amorphous silicon films have been investigated as a function of the preparation conditions by measuring film thickness, UV-absorbency, and FT-IR transmittance. The growth rate of the ${\alpha}$-Si:H films increases with increasing substrate temperture, flow rate and R.F. power density. The UV optical band edge shifts to blue with the increases in the deposition pressure. Increasing substrate temperature shifts the UV optical band edge of the films to red. Hydrogen quantity in the ${\alpha}$-Si:H films increases with an increases in the R.F. powr and decreases with an increase in the substrate temperature.

Bonding and Etchback Silicon-on-Diamond Technology

  • Jin, Zengsun;Gu, Changzhi;Meng, Qiang;Lu, Xiangyi;Zou, Guangtian;Lu, Jianxial;Yao, Da;Su, Xiudi;Xu, Zhongde
    • The Korean Journal of Ceramics
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    • 제3권1호
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    • pp.18-20
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    • 1997
  • The fabrication process of silicon-diamond(SOD) structure wafer were studied. Microwave plasma chemical vapor deposition (MWPCVD) and annealing technology were used to synthesize diamond film with high resistivity and thermal conductivity. Bonding and etchback silicon-on-diamond (BESOD) were utilized to form supporting substrate and single silicon thin layer of SOD wafer. At last, a SOD structure wafer with 0.3~1$\mu\textrm{m}$ silicon film and 2$\mu\textrm{m}$ diamond film was prepared. The characteristics of radiation for a CMOS integrated circuit (IC) fabricated by SOD wafer were studied.

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태양전지 제작을 위한 Hollow Cathode Plasma System의 실리콘 건식식각에 관한 연구 (A study on Silicon dry Etching for Solar Cell Fabrication Using Hollow Cathode Plasma System)

  • 유진수;;이준신
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제53권2호
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    • pp.62-66
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    • 2004
  • This paper investigated the characteristics of a newly developed high density hollow cathode plasma (HCP) system and its application for the etching of silicon wafers. We used SF$_{6}$ and $O_2$ gases in the HCP dry etch process. Silicon etch rate of $0.5\mu\textrm{m}$/min was achieved with $SF_6$$O_2$plasma conditions having a total gas pressure of 50mTorr, and RF power of 100 W. This paper presents surface etching characteristics on a crystalline silicon wafer and large area cast type multicrystlline silicon wafer. The results of this experiment can be used for various display systems such as thin film growth and etching for TFT-LCDs, emitter tip formations for FEDs, and bright plasma discharge for PDP applications.s.

Fabrication of low-stress silicon nitride film for application to biochemical sensor array

  • 손영수
    • 센서학회지
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    • 제14권5호
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    • pp.357-361
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    • 2005
  • Low-stress silicon nitride (LSN) thin films with embedded metal line have been developed as free standing structures to keep microspheres in proper locations and localized heat source for application to a chip-based sensor array for the simultaneous and near-real-time detection of multiple analytes in solution. The LSN film has been utilized as a structural material as well as a hard mask layer for wet anisotropic etching of silicon. The LSN was deposited by LPCVD (Low Pressure Chemical Vapor Deposition) process by varing the ratio of source gas flows. The residual stress of the LSN film was measured by laser curvature method. The residual stress of the LSN film is 6 times lower than that of the stoichiometric silicon nitride film. The test results showed that not only the LSN film but also the stack of LSN layers with embedded metal line could stand without notable deflection.