Chapter 69. Microstructural Control of Sno2 Thin Films by Using Polyethylene Glycol-Mixed Sols

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. Go Sakai1,
  2. Chiaki Sato2,
  3. Kengo Shimanoe3 and
  4. Noboru Yamazoe3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291184.ch69

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

How to Cite

Sakai, G., Sato, C., Shimanoe, K. and Yamazoe, N. (2004) Microstructural Control of Sno2 Thin Films by Using Polyethylene Glycol-Mixed Sols, in 28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291184.ch69

Author Information

  1. 1

    Department of Applied Chemistry Faculty of Engineering Miyazaki University Gakuen-Kibanadai Miyazaki 889–2192, Japan

  2. 2

    Department of Molecular and Materials Sciences Interdisciplinary Graduate School of Engineering Sciences Kyushu University Kasuga-shi, Fukuoka 816–8580, Japan

  3. 3

    Department of Materials Science Faculty of Engineering Sciences Kyushu University Kasuga-shi, Fukuoka 816–8580, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051498

Online ISBN: 9780470291184

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Keywords:

  • PEG;
  • XRD;
  • RINT;
  • JEOL;
  • SSA

Summary

Microstructural control of SnO2 thin films was attempted by introducing various amounts of polyethylene glycol (PEG) into an aqueous sol of SnO2 to be spin-coated. As measured for the powder samples derived from the sols, the addition of PEG cut the specific surface area of SnO2 almost in half, while keeping the crystallite size almost unchanged. Pore size distribution analysis revealed that the average pore diameter was about 6 nm for the powder derived from the neat SnO2 sol, while it was enlarged to about 20 nm by the addition of PEG1000 by 18 wt%. SEM observation of spin-coated thin films revealed that morphology changed from a dense packing of very fine particles to a more porous packing of larger particles with the addition of PEG 1000 or PEG6000. the thickness of spin-coated film could be increased by increasing amount of PEG 1000 or PEG6000 added. the sensor response of these films to H2 gas increased with increasing film thickness. This tendency is considered to result because the porous structure of the film becomes better developed as the amount of PEG increases.