Influence of diameter on the photoresponse in a networked zinc-oxide nanowire photodetector

Ryong Ha, Jae Chul Pyun, Hwangyou Oh, Heon Jin Choi, Young Jin Choi, Jae Kwan Park

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4 Citations (Scopus)


We report on the photoresponses of networked ZnO nanowire photodetectors fabricated by using a simple, mass-scalable process. ZnO nanowires were synthesized by using a carbothermal reduction process and the diameter of the nanowires was controlled by using the thickness of the gold catalyst. The photoresponse was measured by using photodectors fabricated with nanowires of 80 nm and 300 nm in diameter. The photoresponse showed no dependence on the diameter of the nanowires in the wavelength range of 200 ∼ 370 nm, which is attributed to the effects of photo-generation and photolysis on the surface nanowires, while it showed a dependence on the diameter in the wavelength range of 370 ∼ 650 nm.

Original languageEnglish
Pages (from-to)1992-1995
Number of pages4
JournalJournal of the Korean Physical Society
Issue number4
Publication statusPublished - 2008 Oct


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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