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Title: Electrical and photoresponse properties of Co 3O 4 nanowires
Authors: Varghese, B. 
Mukherjee, B.
Karthik, K.R.G.
Jinesh, K.B.
Mhaisalkar, S.G.
Soon Tok, E. 
Haur Sow, C.
Issue Date: 15-May-2012
Citation: Varghese, B., Mukherjee, B., Karthik, K.R.G., Jinesh, K.B., Mhaisalkar, S.G., Soon Tok, E., Haur Sow, C. (2012-05-15). Electrical and photoresponse properties of Co 3O 4 nanowires. Journal of Applied Physics 111 (10) : -. ScholarBank@NUS Repository.
Abstract: Electrical and photocurrent characteristics of single Co 3O 4 nanowire devices were studied systematically. Current-voltage characteristics' measurements and impedance spectroscopy of single Co 3O 4 nanowire devices were performed and analysed using possible mechanism. Photoresponses of individual nanowires were obtained by global irradiation of laser beams with photon energies above band gap and at sub-band gap of the nanowires. The magnitude of photocurrent and its response time revealed that defect level excitations significantly contribute to the photoresponse of Co 3O 4 nanowires. In addition, the electrically Ohmic nature of the nanowire/Pt contact and p-type conductivity of Co 3O 4 nanowire is extracted from the current-voltage characteristics and spatially resolved photocurrent measurements. © 2012 American Institute of Physics.
Source Title: Journal of Applied Physics
ISSN: 00218979
DOI: 10.1063/1.4712497
Appears in Collections:Staff Publications

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