For Libraries For Publication Open Access Downloads About Us Contact Us
Paper Titles
Efficient Visible-Light Photocatalysts from Sensitized TiO2 Nanospheres
p.31
Structural and Optical Properties of Cu2MnSnS4 Thin Film Fabricated by Sol-Gel Technique
p.39
Study of Structural and Optical Properties of Cu2ZnSnS4 and Cu2ZnGeS4 Thin Films Synthesized by Sulfurization of Stacked Metallic Layers
p.44
Lithiation/ Delithiation Process of Silicon-Carbon Composites Prepared by Mechanical Alloying
p.49
Defect-Controlled Gas Sensing Property of Nanostructured ZnO Films
p.54
Preparation and Heat Transfer/Thermal Storage Properties of High-Temperature Molten Nitrate Salts
p.60
Sintering Properties of Apatite-Type Lanthanum Silicate Electrolytes
p.65
Characterization of Si/Artificial Graphite Composite Made by Mechanical Alloying for Li-Ion Cells
p.71
Fabrication of Silica Monoliths with Hierarchically Porous Structure from Freeze-Drying
p.76

Defect-Controlled Gas Sensing Property of Nanostructured ZnO Films

Article Preview

Abstract:

Nanostructured ZnO films were fabricated by chemical vapor deposition (CVD) method with different Sn source concentrations for ethanol sensing application. It was found that the morphology of the ZnO films were obviously affected by Sn concentration, while no any Sn signals were detected in the films. The response of the nanostructured ZnO films increases with the increase of ethanol concentrations, and the S2 sample displays the highest sensitivity. Thephotoluminescence spectra show that more oxygen vacancies exist in the S2 sample than the other samples, which reveals that oxygen vacancies may play a great role to improve the gas sensing properties of the ZnO films.A possible sensing mechanism was proposed to explain these phenomena.This work provides a very simple and efficient method to prepare ZnO gas sensor, its high response and short recovery time are also a merit for the ZnO films used in gas sensor applications.

You might also be interested in these eBooks
Energy and Environmental Materials II View Preview

Info:

Periodical:

Materials Science Forum (Volume 814)

Pages:

54-59

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.814.54

Citation:

Cite this paper

Online since:

March 2015

Authors:

Yong Qin Chang*, Chang Jing Shao, Nan Jiang, Yan Jun Ma, Shi Qi Wang, Bo Zou, Yi Long

Keywords:

Gas Sensor, Oxygen Vacancies, Photoluminescence (PL), ZNO

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

References

[2] O. Lupan, L. Chow, S. Shishiyanu, E. Monaico, T. Shishiyanu, V. Sontea, B. Roldan Cuenya, A. Naitabdi, S. Park, A. Schulte, Nanostructured zinc oxide films synthesized by successive chemical solution deposition for gas sensor applications, Mater. Res. Bull. 44(2009).

DOI: 10.1016/j.materresbull.2008.04.006

Google Scholar

[3] C. Wang, X. Chu, M. Wu, Detection of H2S down to ppb levels at room temperature usingsensors based on ZnO nanorods, Sens. ActuatorsB: Chem. 113(2006) 320-323.

DOI: 10.1016/j.snb.2005.03.011

Google Scholar

[4] D. Gruber, F. Kraus, J. Müller, A novel gas sensor design based on CH4/H2/H2O plasma etched ZnO thin films, Sens. ActuatorsB: Chem. 92(2003) 81-89.

DOI: 10.1016/s0925-4005(03)00013-3

Google Scholar

[5] O. Singh, R.C. Singh, Enhancement in ethanol sensing response by surface activation of ZnO with SnO2, Mater. Res. Bull. 47(2012) 557-561.

DOI: 10.1016/j.materresbull.2011.12.049

Google Scholar

[6] N. Zhang,K. Yu, L.J. Li, Z.Q. Zhu, Synthesis of tin-doped zinc oxide microrods for gas sensor application, Mater. Lett. 108(2013)139-141.

DOI: 10.1016/j.matlet.2013.06.082

Google Scholar

[7] N. Han, X.F. Wu, D.W. Zhang, G.L. Shen, H.D. Liu, Y.F. Chen, CdO activated Sn-doped ZnO for highly sensitive, selective and stable formaldehyde sensor, Sens. ActuatorsB: Chem. 152(2011)324-329.

DOI: 10.1016/j.snb.2010.12.029

Google Scholar

[8] X.H. Jia, H.Q. Fan, M. Afzaal, X.Y. Wu, P. O'Brienb, Solid state synthesis of tin-doped ZnO at roomtemperature: Characterization anditsenhancedgassensingandphotocatalyticproperties,J. Hazard. Mater. 193(2011)194-199.

DOI: 10.1016/j.jhazmat.2011.07.049

Google Scholar

[9] X.D. Li, Y.Q. Chang, Y. Long, Influence of Sn doping on ZnO sensing properties for ethanol and acetone, Mater. Sci. Eng. C. 32(2012)817-821.

DOI: 10.1016/j.msec.2012.01.032

Google Scholar

[10] N. Han, L.Y. Chai, Q. Wang, Y.J. Tian, P.Y. Deng, Y.F. Chen, Evaluating the doping effect of Fe, Ti and Sn on gas sensing property of ZnO, Sens. ActuatorsB: Chem. 147(2010)525-530.

DOI: 10.1016/j.snb.2010.03.082

Google Scholar

[1] S. Benkara, S. Zerkout, H. Ghamri, Synthesis of Sn doped ZnO/TiO2nanocomposite film and their application to H2gas sensing properties, Mater. Sci. Semi. Process. 16(2013)1271-1219.

DOI: 10.1016/j.mssp.2013.02.003

Google Scholar

[2] S.C. Navale, I.S. Mulla, Photoluminescence and gas sensing study of nanostructured pure and Sn doped ZnO, Mater. Sci. Eng. C. 29(2009) 1317-1320.

DOI: 10.1016/j.msec.2008.09.050

Google Scholar

[3] T.T. Trinh, N.H. Tu, H.H. Le, K.Y. Ryu, K.B. Le,K.P. Pillai, J.S. Yi, Improving the ethanol sensing of ZnO nano-particle thin films-The correlation between the grain size and the sensing mechanism, Sens. ActuatorsB: Chem. 152(2011)73-80.

DOI: 10.1016/j.snb.2010.09.045

Google Scholar

[4] S.H. Wei, S.M. Wang, Y. Zhang, M.H. Zhou, Different morphologies of ZnO nanorods and their sensing property, Sens. Actuators B: Chem. 192(2014)480-487.

DOI: 10.1016/j.snb.2013.11.034

Google Scholar

[15] S. Hemmatia, A.A. Firooz, A.A. Khodadadi and Y. Mortazavic, Nanostructured SnO2-ZnO sensors: Highlysensitiveandselectivetoethanol, Sens. Actuators B: Chem. 160(2011)1298-1303.

DOI: 10.1016/j.snb.2011.09.065

Google Scholar

[16] N.D. Khoang, D.D. Trung, N.V. Duy, N.D. Hoa N.V. Hieu, DesignofSnO2/ZnOhierarchical nanostructuresforenhancedethanol gas-sensingperformance, Sens. Actuators B: Chem. 174(2012)594-601.

DOI: 10.1016/j.snb.2012.07.118

Google Scholar

[7] B.D. Yao, L. Feng, C. Cheng, M.M.T. Loy, N. Wang, Tailoring the luminescence emission of ZnO nanostructures by hydrothermal post-treatment in water, Appl. Phys. Lett. 96(2010)223105.

DOI: 10.1063/1.3443636

Google Scholar

© 2025 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied.
Scientific.Net is a registered trademark of Trans Tech Publications Ltd.