Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31093
Gas Sensing Properties of SnO2 Thin Films Modified by Ag Nanoclusters Synthesized by SILD Method

Authors: G. Korotcenkov, B. K. Cho, L. B. Gulina, V. P. Tolstoy


The effect of SnO2 surface modification by Ag nanoclusters, synthesized by SILD method, on the operating characteristics of thin film gas sensors was studied and models for the promotional role of Ag additives were discussed. It was found that mentioned above approach can be used for improvement both the sensitivity and the rate of response of the SnO2-based gas sensors to CO and H2. At the same time, the presence of the Ag clusters on the surface of SnO2 depressed the sensor response to ozone.

Keywords: Characterization, Optimization, Deposition, Gas sensors, Ag nanoparticles

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2093


[1] O. M. Luo, X. Yuan, and X. Zheng, "Catalyst characterization and activity of Ag-Mn, Ag-Co and Ag-Ce composite oxides for oxidation of volatile organic compounds", Appl. Catal. A, vol. 175, pp. 121-129, 1998.
[2] M.S. Tong, G.R. Dai, Y.D. Wu, and D.S. Gao, "High sensitivity and switching-like response behavior of SnO2-Ag-SnO2 element to H2S at room temperature", J. Mater. Sci.: Mater. Electron., vol. 11, pp. 661- 665, 2000.
[3] J. Zhang, and K. Colbow, "Surface silver clusters as oxidation catalysts on semiconductor gas sensors", Sens. Actuators B, vol. 40, pp. 47-52, 1997.
[4] X. Li, and P.W. Bohn, "Metal-assisted chemical etching in HF/H2O2 produces porous silicon", Appl. Phys. Lett., vol. 77, no. 16, pp. 2572- 2574, 2000.
[5] J. Li, Y. Wang, X. Gao, Q. Ma, L. Wang, and J. Han, "H2S sensing properties of the SnO2-based thin films", Sens. Actuators B, vol. 65, pp. 111-113, 2000.
[6] Y. Song, K. Cui, L. Wang, and S. Chen, "The electrodeposition of Ag nanoparticles on a type I collagen-modified glassy carbon electrode and their applications as a hydrogen peroxide sensor", Nanotechnology, vol. 20, 105501, 2009.
[7] T. Qiu, X.L. Wu, J.C. Shen, P. C. T. Ha, and P. K. Chu, "Analysis of the noble metal catalytic additives introduced by impregnation of as obtained SnO2 sol-gel nanocrystals for gas sensors", Nanotechnology, vol. 17, pp. 5769-5772, 2006.
[8] G. Korotcenkov, V. Tolstoy, and J. Schwank, "Successive ionic layer deposition (SILD) as a new sensor technology: synthesis and modification of metal oxides", Meas. Sci. Technol., vol. 17, pp. 1861- 1869, 2006.
[9] V.P. Tolstoy, "The peroxide route of the successive layer deposition procedure for synthesizing nanolayers of metal oxides, hydroxides and peroxides", Thin Solid Films, vol. 307, pp. 10-13, 1997.
[10] E. Janata, A. Henglein, and B.G. Ershov, "First Clusters of Ag+ ion reduction in aqueous solution", J. Phys. Chem., vol. 98, pp. 10888- 10890, 1994.
[11] G. Korotcenkov, V. Brinzari, M. DiBattista, J. Schwank, and A. Vasiliev, "Peculiarities of SnO2 thin film deposition by spray pyrolysis for gas sensor application", Sens. Actuators B, vol. 77, no. 1-2, pp. 244- 252, 2001.
[12] V. Brinzari, G. Korotcenkov, J. Schwank, V. Lantto, S. Saukko, and V. Golovanov, "Morphological rank of nano-scale tin dioxide films deposited by spray pyrolysis from SnCl4.5H2O water solution", Thin Solid Films, vol. 408, pp. 51-58, 2002.
[13] L.B. Gulina, G. Korotcenkov, B.K. Cho, and V.P. Tolstoy, "Ag nanoclusters synthesized by SILD method", J. Mater. Sci., in press, 2011.
[14] G.Korotcenkov, V.Brinzari, Y.Boris, M.Ivanov, J.Schwank, and J.Morante, Surface Pd doping influence on gas sensing characteristics of SnO2 thin films deposited by spray pyrolysis. Thin Solid Films, vol. 436, no. 1, pp. 119-126, 2003.
[15] S. Matsushima, Y. Teraoka, N. Miura, and N. Yamazoe, "Electronic interaction between metal additives and tin dioxide in tin dioxide-based gas sensors", Jpn. J. Appl. Phys., vol. 27, pp. 1798-1802, 1988.
[16] M.X. Yang, P.W. Jacobs, C. Yoon, L. Muray, E. Anderson, D. Attwood and G.A. Somorjai, "Thermal stability of uniform silver clusters prepared on oxidized silicon and aluminum surfaces by electron beam lithography in oxidizing and reducing ambient", Catal. Lett., vol. 45, pp. 5-13, 1997.
[17] J.F. Weaver, and G.B. Hoflund, "Surface characterization study of the thermal-decomposition of Agð×", J. Phys. Chem., vol. 98, no. 34, pp. 8519-8524, 1994.
[18] G.B. Hoflund, Z. F. Hazos, and G.N. Salaita, "Surface characterization study of Ag, AgO, and Ag2O using x-ray photoelectron spectroscopy and electron energy-loss spectroscopy", Phys. Rev. B, vol. 62, no. 16, pp. 11126-11133, 2000.
[19] B. Dhandapani, and S.T. Oyama, "Gas phase ozone decomposition catalysts", Appl. Catal. B, vol. 11, pp. 129-166, 1997.
[20] S. Imamura, M. Ikebata, T. Ito, and T. Ogita, "Decomposition of ozone on a silver catalyst", Ind. Eng. Chem. Res., vol. 30, pp. 217-221, 1991.