Reverse biased Schottky contact hydrogen sensors based on Pt/nanostructured ZnO/SiC

Shafiei, M, Arsat, R, Yu, J, Kalantar Zadeh, K, Comini, E, Ferroni, M, Sberveglieri, G and Wlodarski, W 2009, 'Reverse biased Schottky contact hydrogen sensors based on Pt/nanostructured ZnO/SiC', in Olfaction and Electronic Nose: Proceedings of the 13th International Symposium on Olfaction and Electronic Nose, Brescia, Italy, 15-17 Apr 2009, pp. 353-356.


Document type: Conference Paper
Collection: Conference Papers

Title Reverse biased Schottky contact hydrogen sensors based on Pt/nanostructured ZnO/SiC
Author(s) Shafiei, M
Arsat, R
Yu, J
Kalantar Zadeh, K
Comini, E
Ferroni, M
Sberveglieri, G
Wlodarski, W
Year 2009
Conference name 13th International Symposium on Olfaction and Electronic Nose (ISOEN 2009)
Conference location Brescia, Italy
Conference dates 15-17 Apr 2009
Proceedings title Olfaction and Electronic Nose: Proceedings of the 13th International Symposium on Olfaction and Electronic Nose
Publisher AIP
Place of publication New York, USA
Start page 353
End page 356
Total pages 4
Abstract Pt/nanostructured ZnO/SiC Schottky contact devices were fabricated and characterized for hydrogen gas sensing. These devices were investigated in reverse bias due to greater sensitivity, which attributes to the application of nanostructured ZnO. The current-voltage (I-V) characteristics of these devices were measured in different hydrogen concentrations. Effective change in the barrier height for 1% hydrogen was calculated as 27.06 meV at 620° C. The dynamic response of the sensors was also investigated and a voltage shift of 325 mV was recorded at 620° C during exposure to 1% hydrogen in synthetic air.
Subjects Sensor Technology (Chemical aspects)
Keyword(s) sensors
point contact devices
boundary
surface barrier
fabrication and characterization
nanoscale materials and structures
remote sensing
DOI - identifier 10.1063/1.3156546
Copyright notice ©2009 American Institute of Physics
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