The Applications of Sol-Gel Derived Tin Oxide Thin Films

  • Park, Sung-Soon (Dept. of Mater. Sci. and Eng., Univ. of California-Los Angeles, Los Angeles, CA 90024, USA) ;
  • John D. Mackenzie (Dept. of Mater. Sci. and Eng., Univ. of California-Los Angeles, Los Angeles, CA 90024, USA)
  • 발행 : 1996.03.01

초록

Transparent conducting $SnO_2$-based thin films have been coated on float substrates such as fused quartz, and ceramic fiber cloths such as the Nexel and E-glass cloth from tin alkoxides by the sol-gel technique. Also, thin films of alternating layers of $SnO_2$ and $SiO_2$ have been fabricated by dip coating. The sheet resistance and average visible transmittance of the films were investigated in the aspect of the applications as transparent electrodes such as liquid crystal displays, photo-detectors and solar cells. The Nextel and E-glass cloths coated with antimony-doped tin oxide (ATO) had sheet resistance of as low as $20 \;ohm/{\Box}$ and $120ohm/\;{\Box}$, respectively. The promotion effects of additives as $La_2O_3$ and Pt on the ethanol gas sensing properties of the films were investigated in the aspects of the applications as an alcohol sensor and a breath alcohol checker. Possible evidence of quantum well effects in the oxide multilayers of $SnO_2$ and $SiO_2$ was investigated.

키워드

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