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Sensing Characteristics of Cubic and Rhombohedral Nanocrystalline ITO Thick Films

  • Jeung-Soo Huh (a1), Bong-Chull Kim (a1), Jae-Yeol Kim (a1) and Jeong-Ok Lim (a2)

Abstract

Two kinds of nanocrystalline Tin doped indium oxide (or indium tin oxide: denoted ITO hereafter) powders with different crystal structures – rhombohedral and cubic – were prepared using a coprecipitation method through the control of pH of a mixing solution and aging time after coprecipitation. The two powders have the same particle size of 15 nm in diameter but different morphologies (spherical for rhomboheral and rectangular for cubic). The gaseous ethanol sensing characteristics of the sensors prepared by the two ITO powders were quite different. The sensitivity of rhombohedral ITO sensor was high compared to that of the cubic ITO sensor across all temperatures. The reason for this is explained through the viewpoint of the binding energy of XPS and the surface structure relating to the crystal structure.

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[1] Hamberg, I. and Granqivst, C. G., J. Appl. Phys. 60 [11] (1986) R123–R159.
[2] Sberveglieri, G. and Groppelli, S., Sensors and Actuators 15 (1988) 235245.
[3] Yamazoe, N., Sensors and Acutuators B 5 (1991) 719.
[4] Choi, J. D. and Choi, G. M., Sensors and Actuators B 69 (2000) 120126.
[5] Gurlo, A., Ivanovskaya, M., Barsan, N., Schweizer-Berberich, M., Weimar, U., Gopel, W., and Dieguez, A., Sensors and Actuators B 44 (1997) 327333.
[6] Lee, D. S., Han, S. D., Huh, J. S., and Lee, D. D., Sensors and Actuators B 60 (1999) 5763.
[7] Kim, B. C., Lee, J. H., Kim, J. J., and Ikegami, T., Rapid rate sintering of nanocrystalline indium tin oxide [ITO] ceramics: particle size effect, Materials Letters 52 (2002) 114119.
[8] Kim, B. C., Kim, J. J., and Chang, S. H., Proceeding of MRS Meeting, Boston, MA, Nov.29-Dec.2, 1999.
[9] Yamazoe, N. and Miura, N., in: Yamauchi, S. (Ed.), Chemical sensor technology, vol. 4, Kodansha LTD., Tokyo, 1992, pp. 1941.
[10] Morrison, S. R., in: Anderson, J. R. and Boudart, M. (Ed.), Catalysis, vol. 3, Springer-Verlag, Berlin, Heidelberg, 1982, pp. 199229 (chapter 4).
[11] Somoriai, G. A. and Salmeron, M., in: Fulrath, R. M. and Pask, J. A. (Ed.), Ceramic Microstructure '97, Westview Press, Boulder, CO, 1977, pp. 101128.
[12] Morrison, S. R., The chemical physics of surfaces, Plenum press, New York, 1977.

Sensing Characteristics of Cubic and Rhombohedral Nanocrystalline ITO Thick Films

  • Jeung-Soo Huh (a1), Bong-Chull Kim (a1), Jae-Yeol Kim (a1) and Jeong-Ok Lim (a2)

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