Singh, V. N. and Mehta, B. R and Joshi, R .K and Kruis, F. E (2007) Size-Dependent Gas Sensing Properties of Indium Oxide Nanoparticle Layers. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 7 (6). 1930-1934(5). ISSN 1533-4880
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In2O3 nanoparticle layers having an average size of 8, 11, 15, 21, and 29 nm have been deposited using a two-step method consisting of chemical capping and dip coating techniques. The gas sensing properties in terms of sensor response and response time of the nanoparticle layers towards ethanol have been studied as a function of ethanol concentration and operating temperature. It has been observed that the sensor response increases and the response time decreases with decreasing size in the size range of 5-15 nm. The increase in sensor response at smaller nanoparticle size has been explained in terms of the increase in surface area and particle size becoming comparable to the electron Debye length.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||27 May 2009 10:24|
|Last Modified:||27 May 2009 10:24|
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