Aging effect on the optoelectronic properties of a single ZnO nanowire

Kihyun Keem; Jeongmin Kang; Dong Young Jeong; Byungdon Min; Kyoungah Cho; Hyunsuk Kim; Sangsig Kim; Young Keun Kim

doi:10.1143/JJAP.46.4355

Aging effect on the optoelectronic properties of a single ZnO nanowire

Kihyun Keem, Jeongmin Kang, Dong Young Jeong, Byungdon Min, Kyoungah Cho, Hyunsuk Kim, Sangsig Kim, Young Keun Kim

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The effect of aging on the optoelectronic properties of a single ZnO nanowire is investigated in this study. The photoluminescence (PL), photocurrent spectrum, current-voltage characteristics, and photoresponse were measured for the as-grown ZnO nanowire and for the same nanowire exposed to air for three months. For the aged nanowire, the broad PL band is weaker, the intensity of the photocurrent is stronger, and the photoresponse is slower than those of the as-grown nanowire. One of the possible explanations is that the observed aging effect on the PL is due to the reduction in the number of oxygen vacancies within the nanowire and that the aging effect on the photocurrent and photoresponse originates from the formation of oxygen vacancies near the surface.

Original language	English
Pages (from-to)	4355-4358
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	7 A
DOIs	https://doi.org/10.1143/JJAP.46.4355
Publication status	Published - 2007 Jul 4

Keywords

Aging effect
Nanowire
Photoconduction
ZnO

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.46.4355

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abstract = "The effect of aging on the optoelectronic properties of a single ZnO nanowire is investigated in this study. The photoluminescence (PL), photocurrent spectrum, current-voltage characteristics, and photoresponse were measured for the as-grown ZnO nanowire and for the same nanowire exposed to air for three months. For the aged nanowire, the broad PL band is weaker, the intensity of the photocurrent is stronger, and the photoresponse is slower than those of the as-grown nanowire. One of the possible explanations is that the observed aging effect on the PL is due to the reduction in the number of oxygen vacancies within the nanowire and that the aging effect on the photocurrent and photoresponse originates from the formation of oxygen vacancies near the surface.",

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AU - Jeong, Dong Young

AU - Min, Byungdon

AU - Cho, Kyoungah

AU - Kim, Hyunsuk

AU - Kim, Sangsig

AU - Kim, Young Keun

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AB - The effect of aging on the optoelectronic properties of a single ZnO nanowire is investigated in this study. The photoluminescence (PL), photocurrent spectrum, current-voltage characteristics, and photoresponse were measured for the as-grown ZnO nanowire and for the same nanowire exposed to air for three months. For the aged nanowire, the broad PL band is weaker, the intensity of the photocurrent is stronger, and the photoresponse is slower than those of the as-grown nanowire. One of the possible explanations is that the observed aging effect on the PL is due to the reduction in the number of oxygen vacancies within the nanowire and that the aging effect on the photocurrent and photoresponse originates from the formation of oxygen vacancies near the surface.

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Aging effect on the optoelectronic properties of a single ZnO nanowire

Abstract

Keywords

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