Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2384804
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Electrical conductivity and photoconductivity measurements were carried out on semiconducting vanadium oxide nanowire networks synthesized through the polycondensation of vanadic acid. The temperature-dependent conductivity was described well by Mott's optical multiphonon assisted hopping model at high temperatures and by the variable-range hopping mechanism at low temperatures. The photoconductivity showed a weak temperature dependence. Besides, quasipersistent photocurrent with a single-exponential decay behavior was observed right after switching off the light and was explained in terms of the random local-potential fluctuation model. (c) 2006 American Institute of Physics.
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