Hydrothermal treatment of tin oxide sol solution for preparation of thin-film sensor with enhanced thermal stability and gas sensitivity

Nam Seok Baik, Go Sakai, Kengo Shimanoe, Norio Miura, Noboru Yamazoe

研究成果: ジャーナルへの寄稿記事

79 引用 (Scopus)

抄録

The effects of treating tin oxide gel hydrothermally in an ammonia solution at 200 °C for 3 h were studied. The size of sol particles increased with increasing concentration of the resulting sol solution, i.e., 5, 8, 10 and 32 nm for 1.8, 3.2, 6.1 and 8.6 wt.% tin oxide sol as determined by an optical analyzer, whereas the crystallite size of tin oxide determined by X-ray diffraction analysis remained to be about 5-7 nm for all the solutions. The tin oxide powder collected was found to be resistant to grain growth on calcination, depending on the concentration of the sol solution. This tendency was maintained in the thin-films spin-coated on an alumina substrate from the sol solutions. The grain size of the film derived from 1.8 wt.% tin oxide sol was smaller than 10 nm in diameter after calcination at 600 °C. This particular film exhibited an outstanding by high sensitivity to 800 ppm H2 at 350 °C, compared with conventional tin oxide elements of a sintered block type.

元の言語英語
ページ(範囲)97-100
ページ数4
ジャーナルSensors and Actuators, B: Chemical
65
発行部数1
DOI
出版物ステータス出版済み - 6 30 2000

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Polymethyl Methacrylate
Sols
Tin oxides
tin oxides
Thermodynamic stability
thermal stability
Gases
Thin films
preparation
sensors
Sensors
thin films
gases
Calcination
roasting
Aluminum Oxide
Crystallite size
Grain growth
Ammonia
Powders

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

これを引用

Hydrothermal treatment of tin oxide sol solution for preparation of thin-film sensor with enhanced thermal stability and gas sensitivity. / Baik, Nam Seok; Sakai, Go; Shimanoe, Kengo; Miura, Norio; Yamazoe, Noboru.

:: Sensors and Actuators, B: Chemical, 巻 65, 番号 1, 30.06.2000, p. 97-100.

研究成果: ジャーナルへの寄稿記事

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AU - Baik, Nam Seok

AU - Sakai, Go

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AU - Yamazoe, Noboru

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N2 - The effects of treating tin oxide gel hydrothermally in an ammonia solution at 200 °C for 3 h were studied. The size of sol particles increased with increasing concentration of the resulting sol solution, i.e., 5, 8, 10 and 32 nm for 1.8, 3.2, 6.1 and 8.6 wt.% tin oxide sol as determined by an optical analyzer, whereas the crystallite size of tin oxide determined by X-ray diffraction analysis remained to be about 5-7 nm for all the solutions. The tin oxide powder collected was found to be resistant to grain growth on calcination, depending on the concentration of the sol solution. This tendency was maintained in the thin-films spin-coated on an alumina substrate from the sol solutions. The grain size of the film derived from 1.8 wt.% tin oxide sol was smaller than 10 nm in diameter after calcination at 600 °C. This particular film exhibited an outstanding by high sensitivity to 800 ppm H2 at 350 °C, compared with conventional tin oxide elements of a sintered block type.

AB - The effects of treating tin oxide gel hydrothermally in an ammonia solution at 200 °C for 3 h were studied. The size of sol particles increased with increasing concentration of the resulting sol solution, i.e., 5, 8, 10 and 32 nm for 1.8, 3.2, 6.1 and 8.6 wt.% tin oxide sol as determined by an optical analyzer, whereas the crystallite size of tin oxide determined by X-ray diffraction analysis remained to be about 5-7 nm for all the solutions. The tin oxide powder collected was found to be resistant to grain growth on calcination, depending on the concentration of the sol solution. This tendency was maintained in the thin-films spin-coated on an alumina substrate from the sol solutions. The grain size of the film derived from 1.8 wt.% tin oxide sol was smaller than 10 nm in diameter after calcination at 600 °C. This particular film exhibited an outstanding by high sensitivity to 800 ppm H2 at 350 °C, compared with conventional tin oxide elements of a sintered block type.

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