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Optoelectronic characterization of morphology-controlled zinc oxide nanowires

Published online by Cambridge University Press:  04 April 2011

Shou-Yi Kuo ,
Fang-I Lai ,
Chun-Chieh Wang  and
Woei-Tyng Lin
Shou-Yi Kuo
Affiliation:
Department of Electronic Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan Tao-Yuan 333, Taiwan Green Technology Research Center, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan Tao-Yuan 333, Taiwan
Fang-I Lai
Affiliation:
Department of Photonics Engineering, Yuan-Ze University, 135 Yuan-Tung Road, Chung-Li 320, Taiwan
Chun-Chieh Wang
Affiliation:
Department of Electronic Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan Tao-Yuan 333, Taiwan
Woei-Tyng Lin
Affiliation:
Department of Photonics Engineering, Yuan-Ze University, 135 Yuan-Tung Road, Chung-Li 320, Taiwan
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Abstract

In this paper, we report the characterization of vertically aligned ZnO nanowire (NW) arrays synthesized by metal-catalyzed chemical vapor deposition. The growth mechanism of ZnO NWs may be related to vapor-solid-nucleation. Morphological, structural, optical and field emission characteristics can be modified by varying the growth time. For growth time reaches 120 min, the length and the diameter of ZnO NWs are 1.5 μm and 350 nm, and they also show preferential growth orientation along the c-axis. Moreover, strong alignment and uniform distribution of ZnO NWs can effectively enhance the antireflection to reach the average reflectance of 5.7% in the visible region as well. Field emission measurement indicated that the growth time play an important role in density- and morphology-controlled ZnO NWs, and thus ZnO NWs are expected to be used in versatile optoelectronic devices.

Keywords

II-VIfield emissionnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1315: Symposium MM – Transparent Conducting Oxides and Applications , 2011 , mrsf10-1315-mm06-05
Copyright
Copyright © Materials Research Society 2011

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References

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