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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4336

Title: Explosive vapor sensor using poly (3-hexylthiophene) and Cu(II) tetraphenylporphyrin composite based organic field effect transistors
Authors: DUDHE, RS
TIWARI, SP
RAVAL, HN
KHADERBAD, MA
SINGH, R
SINHA, J
YEDUKONDALU, M
RAVIKANTH, M
KUMAR, A
RAO, VR
Keywords: thin-film-transistors
gas sensors
effect mobility
tnt
poly(3-hexylthiophene)
device
Issue Date: 2008
Publisher: AMER INST PHYSICS
Citation: APPLIED PHYSICS LETTERS, 93(26), -
Abstract: Organic field effect transistors based on poly(3-hexylthiophene) and Cu(II) tetraphenylporphyrin composite were investigated as sensors for detection of vapors of nitrobased explosive compounds, viz., 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX), 2,4,6-trinitrotoluene (TNT), and dinitrobenzene, which are also strong oxidizing agents. Significant changes, suitable for sensor response, were observed in transistor "on" current (I(on)) and conductance (S) after exposure. A similar device response was, however, not observed for oxidizing agents such as benzoquinone and benzophenone. The Fourier transform infrared spectrometry experiments supported the results, where exposure to RDX and TNT vapors resulted in a significant shift in IR peaks.
URI: http://dx.doi.org/10.1063/1.3049130
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4336
http://hdl.handle.net/10054/4336
ISSN: 0003-6951
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