Electrical transport and quasipersistent photocurrent in vanadium oxide nanowire networks

Jitae Park, Eunmo Lee, Kyu Won Lee, Cheol Eui Lee

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29 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number183114
JournalApplied Physics Letters
Volume89
Issue number18
DOIs
Publication statusPublished - 2006

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation [user Program of Proton Engineering Frontier Project (PEFP), as a part of the 21C Frontier RD Program and M60504000021-05B0400-02110] and by the Korea Research Foundation (Grant No. KRF-2004-005-C00060 and the Second Brain Korea 21 Project). This work was also supported by the Seoul Research and Business Development Program (Grant No. 10583). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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