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Explosive vapor sensor using poly (3-hexylthiophene) and Cu(II) tetraphenylporphyrin composite based organic field effect transistors

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Title Explosive vapor sensor using poly (3-hexylthiophene) and Cu(II) tetraphenylporphyrin composite based organic field effect transistors
 
Creator DUDHE, RS
TIWARI, SP
RAVAL, HN
KHADERBAD, MA
SINGH, R
SINHA, J
YEDUKONDALU, M
RAVIKANTH, M
KUMAR, A
RAO, VR
 
Subject thin-film-transistors
gas sensors
effect mobility
tnt
poly(3-hexylthiophene)
device
explosives
field effect transistors
fourier transform spectra
gas sensors
infrared spectra
organic compounds
organic semiconductors
 
Description 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.
 
Publisher AMER INST PHYSICS
 
Date 2011-07-15T17:35:59Z
2011-12-26T12:49:36Z
2011-12-27T05:34:57Z
2011-07-15T17:35:59Z
2011-12-26T12:49:36Z
2011-12-27T05:34:57Z
2008
 
Type Article
 
Identifier APPLIED PHYSICS LETTERS, 93(26), -
0003-6951
http://dx.doi.org/10.1063/1.3049130
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4336
http://hdl.handle.net/10054/4336
 
Language en