Effect of an Au Nanodot Nucleation Layer on CO Gas Sensing Properties of Nanostructured SnO2 Thin Films

Nguyen Le Hung; Hyojin Kim; Dojin Kim

Korean Journal of Materials Research, Vol.24, No.3, 152-158, March, 2014

DOI10.3740/MRSK.2014.24.3.152 Export Citation

Effect of an Au Nanodot Nucleation Layer on CO Gas Sensing Properties of Nanostructured SnO2 Thin Films

Nguyen Le Hung^{1, 2}, Hyojin Kim^{1, 2, †}, and Dojin Kim^{1, 2}

¹Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, Daejeon 305-764, Korea
²Department of Physics, Thai Nguyen University of Education, Thai Nguyen, Vietnam

E-mail:

We report the effect of the fabric of the surface microstructure on the CO gas sensing properties of SnO2 thin films deposited on self-assembled Au nanodots (SnO2/Au) that were formed on SiO2/Si substrates. We characterized structural and morphological properties, comparing them to those of SnO2 thin films deposited directly onto SiO2/Si substrates. We observed a significant enhancement of CO gas sensing properties in the SnO2/Au gas sensors, specifically exhibiting a high maximum response at 200 oC and quite a low detection limit of 1 ppm level in dry air. In particular, the response of the SnO2/Au gas sensor was found to reach the maximum value of 32.5 at 200 oC, which is roughly 27 times higher than the response (~1.2) of the SnO2 gas sensor obtained at the same operating temperature of 200 oC. Furthermore, the SnO2/Au gas sensors displayed very fast response and recovery behaviors. The observed enhancement in the CO gas sensing properties of the SnO2/Au sensors is mainly ascribed to the formation of a nanostructured morphology in the active SnO2 layer having a high specific surfacereaction area by the insertion of a nanodot form of Au nucleation layer.

Keywords:tin oxide;nanostructured oxide;gas sensor;Au nanodot;sputtering

[References]

Seiyama T, Kato A, Fujiishi K, Nagatani M, Anal. Chem., 34, 1502 (1962)
Hubner M, Simion CE, Haensch A, Barsan N, Weimar U, Sens. Actuators B, 151, 103 (2010)
Lee SW, Tsai PP, Chen H, Sens. Actuators B, 67, 122 (2000)
Rella R, Serra A, Siciliano P, Vasanelli L, De G, Licciulli A, Thin Solid Films, 304(1-2), 339 (1997)
Khanna A, Kumar R, Bhatti SS, Appl. Phys. Lett., 82, 4388 (2003)
Fasaki I, Suchea M, Mousdis G, Kiriakidis G, Kompitsas M, Thin Solid Films, 518(4), 1109 (2009)
Korotcenkov C, Cho BK, Gulina L, Tolstoy V, Sens. Actuators B, 141, 610 (2009)
Hyang H, Ong CY, Guo J, White T, Tse MS, Tan OK, Nanoscale, 2, 1203 (2010)
Choi JK, Hwang IS, Kim SJ, Park JS, Park SS, Jeong U, Kang YC, Lee JH, Sens. Actuators B, 150, 191 (2010)
Neri G, Bonavita A, Rizzo G, Galvagno S, Pinna N, Niederberger M, Capone, Siciliano P, Sens. Actuators B, 122, 564 (2007)
Wang YL, Jiang XC, Xia YN, J. Am. Chem. Soc., 125(52), 16176 (2003)
Matin BM, Mortazavi Y, Khodadadi AA, Abbasi A, Firooz AA, Sens. Actuators, B, 151, 40 (2010)
Hung NL, Kim H, Hong SK, Kim D, Sens. Actuators B, 151, 127 (2010)
NIOSH Pocket Guide to Chemical Hazards, 3rd ed., National Institute for Occupational Safety and Health, Cincinnati. (2007)
Scott RWJ, Yang SM, Chabanis G, Coombs N, Williams DE, Ozin GA, Adv. Mater., 13(19), 1468 (2001)
Takata M, Tsubone D, Yanagida H, J. Am. Ceram. Soc., 59, 4 (1976)
Sedghi SM, Mortazavi Y, Khodadadi A, Sens. Actuators B, 145, 7 (2010)

[Related Articles]

[1] Seiyama T, Kato A, Fujiishi K, Nagatani M, Anal. Chem., 34, 1502 (1962)

[2] Hubner M, Simion CE, Haensch A, Barsan N, Weimar U, Sens. Actuators B, 151, 103 (2010)

[3] Lee SW, Tsai PP, Chen H, Sens. Actuators B, 67, 122 (2000)

[4] Rella R, Serra A, Siciliano P, Vasanelli L, De G, Licciulli A, Thin Solid Films, 304(1-2), 339 (1997)

[5] Khanna A, Kumar R, Bhatti SS, Appl. Phys. Lett., 82, 4388 (2003)

[6] Fasaki I, Suchea M, Mousdis G, Kiriakidis G, Kompitsas M, Thin Solid Films, 518(4), 1109 (2009)

[7] Korotcenkov C, Cho BK, Gulina L, Tolstoy V, Sens. Actuators B, 141, 610 (2009)

[8] Hyang H, Ong CY, Guo J, White T, Tse MS, Tan OK, Nanoscale, 2, 1203 (2010)

[9] Choi JK, Hwang IS, Kim SJ, Park JS, Park SS, Jeong U, Kang YC, Lee JH, Sens. Actuators B, 150, 191 (2010)

[10] Neri G, Bonavita A, Rizzo G, Galvagno S, Pinna N, Niederberger M, Capone, Siciliano P, Sens. Actuators B, 122, 564 (2007)

[11] Wang YL, Jiang XC, Xia YN, J. Am. Chem. Soc., 125(52), 16176 (2003)

[12] Matin BM, Mortazavi Y, Khodadadi AA, Abbasi A, Firooz AA, Sens. Actuators, B, 151, 40 (2010)

[13] Hung NL, Kim H, Hong SK, Kim D, Sens. Actuators B, 151, 127 (2010)

[14] NIOSH Pocket Guide to Chemical Hazards, 3rd ed., National Institute for Occupational Safety and Health, Cincinnati. (2007)

[15] Scott RWJ, Yang SM, Chabanis G, Coombs N, Williams DE, Ozin GA, Adv. Mater., 13(19), 1468 (2001)

[16] Takata M, Tsubone D, Yanagida H, J. Am. Ceram. Soc., 59, 4 (1976)

[17] Sedghi SM, Mortazavi Y, Khodadadi A, Sens. Actuators B, 145, 7 (2010)