Photocurrent in ZnO nanowires grown from Au electrodes

Kihyun Keem, Hyunsuk Kim, Gyu-Tae Kim, Jong Soo Lee, Byungdon Min, Kyoungah Cho, Man Young Sung, Sangsig Kim

Research output: Contribution to journalArticle

281 Citations (Scopus)

Abstract

The ZnO nanowires, grown from two Au electrodes, were networked to allow the mechanism of photoconduction. It was found that the photocurrents through the nanowires excited by both the below-gap and above-gap light are surface-related. The rise and decay times of the photoresponses show that the trapping time of electrons ranges from 10 ms to several hours. The results show that the I-V characteristics of the photocurrent under the illumination of the below-gap light are Schottky, while those under the illumination of the above-gap light are ohmic.

Original languageEnglish
Pages (from-to)4376-4378
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number22
DOIs
Publication statusPublished - 2004 May 31

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photocurrents
nanowires
electrodes
illumination
trapping
decay
electrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Photocurrent in ZnO nanowires grown from Au electrodes. / Keem, Kihyun; Kim, Hyunsuk; Kim, Gyu-Tae; Lee, Jong Soo; Min, Byungdon; Cho, Kyoungah; Sung, Man Young; Kim, Sangsig.

In: Applied Physics Letters, Vol. 84, No. 22, 31.05.2004, p. 4376-4378.

Research output: Contribution to journalArticle

Keem, Kihyun ; Kim, Hyunsuk ; Kim, Gyu-Tae ; Lee, Jong Soo ; Min, Byungdon ; Cho, Kyoungah ; Sung, Man Young ; Kim, Sangsig. / Photocurrent in ZnO nanowires grown from Au electrodes. In: Applied Physics Letters. 2004 ; Vol. 84, No. 22. pp. 4376-4378.
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