Pt/MoO3 nano-flower/SiC Schottky diode based hydrogen gas sensor
Shafiei, M., Yu, J, Breedon, M, Moafi, A, Kaner, R.B., & Galatsis, K (2010) Pt/MoO3 nano-flower/SiC Schottky diode based hydrogen gas sensor. In Fedder, Gary (Ed.) Ninth IEEE Conference on SENSORS proceedings, IEEE, Kona, Hawaii, pp. 354-357.
In this paper, we report the development of a novel Pt/MoO3 nano-flower/SiC Schottky diode based device for hydrogen gas sensing applications. The MoO3 nanostructured thin films were deposited on SiC substrates via thermal evaporation. Morphological characterization of the nanostructured MoO3 by scanning electron microscopy revealed randomly orientated thin nanoplatelets in a densely packed formation of nano-flowers with dimensions ranging from 250 nm to 1 μm. Current-voltage characteristics of the sensor were measured at temperatures from 25°C to 250°C. The sensor showed greater sensitivity in a reverse bias condition than in forward bias. Dynamic response of the sensor was investigated towards different concentrations of hydrogen gas in a synthetic air mixture at 250°C and a large voltage shift of 5.7 V was recorded upon exposure to 1% hydrogen.
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|Item Type:||Conference Paper|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100) > Sensor Technology (Chemical aspects) (030107)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanomaterials (100708)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanoscale Characterisation (100712)
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty|
|Copyright Owner:||© 2010 IEEE.|
|Deposited On:||02 May 2013 00:38|
|Last Modified:||12 Jul 2013 11:05|
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