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Volume : II, Issue : XI, December - 2012 ASTUDYOFZNO NANO-WIRE FIELD-EFFECT TRANSISTOR WITH CHEMICALSENSING A. P . Y ADA V, ADARSHAKUMAR AND AJA YKUMAR THAKUR Published By : Laxmi Book Publication Abstract : In this paper Zinc oxide nanowire has been configured as n-channel FET s.
These transistors have been implemented as chemical sensors for detection of various
chemical gases. During the course of investigation it is observed that the nanowire
conductance is reduced when it is exposed to oxygen, nitrogen dioxide, ammonia gases
at room temperatur e. Its ammonia sensing behavior is observed to switch fr om oxidizing
to reducing when temperatur e is incr eased to 500 K. This effect is mainly attributed to the
temperatur e dependent Fermi level shift. In addition, carbon monoxide is found to
incr ease the nanowire conductance in the presence of oxygen. Furthermore, the
detection sensitivity dependence on the nanowire radius is presented. Keywords : Article : Cite This Article : A. P . Y ADA V, ADARSHAKUMAR AND AJA YKUMAR THAKUR, (2012). ASTUDYOFZNO NANO-WIRE FIELD-EFFECT TRANSISTOR WITH CHEMICALSENSING. Indian Streams Research Journal, Vol. II, Issue. XI, http://oldisrj.lbp.world/UploadedData/1798.pdf References : - S. J. T ans, A. R. M. V erschucren, and C. Dekkcr, “Room. temperature transistor based on a single carbon nanowbe,” Nature, vol. 393, pp. 49—5 2. 1998.
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