Pt/WO3 nanoplatelet/SiC Schottky diode based hydrogen gas sensor

Shafiei, Mahnaz, Yu, Jerry, Sadek, Abu Z., Motta, Nunzio, Kalantar-zadeh, Kourosh, & Wlodarski, Wojtek (2012) Pt/WO3 nanoplatelet/SiC Schottky diode based hydrogen gas sensor. In Proceedings of the 4th International Conference on Nanostructures (ICNS4), Springer, Kish Island, I.R. Iran, pp. 889-891.

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This paper presents the fabrication and study of a Schottky diode based on Pt/WO3 nanoplatelet/SiC for H2 gas sensing applications. The nanostructured WO3 films were synthesized from tungsten (sputtered on SiC) via an acidetching method using a 1.5 M HNO3 solution. Scanning electron microscopy of the developed films revealed platelet crystals with thicknesses in the order of 20-60 nm and lengths between 100-700 nm. The current-voltage characteristic and dynamic response of the diodes were measured in the presence of air and 1% H2 gas balanced in air from 25 to 300°C. Upon exposure to 1% H2, voltage shifts of 0.64, 0.93 and 1.14 V were recorded at temperatures of 120, 200 and 300°C, respectively at a constant forward bias current of 500 μA.

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ID Code: 87264
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Sensor, Hydrogen, Schottky diode, WO3 nanoplatelet, Acid etching
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanomaterials (100708)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > OTHER TECHNOLOGY (109900)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > Institutes > Institute for Future Environments
Copyright Owner: Copyright 2012 [please consult the authors]
Deposited On: 04 Sep 2015 00:34
Last Modified: 07 Sep 2015 00:06

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