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http://dx.doi.org/10.6111/JKCGCT.2011.21.4.147

Fabrication and characteristics of ZnO nanorods grown on Zn substrates by the hydrothermal method  

Sung, Ji-Hye (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Materials Center)
Kim, Jin-Ho (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Materials Center)
Hwang, Jong-Hee (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Materials Center)
Lim, Tae-Young (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Materials Center)
Yeon, Deuk-Ho (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Materials Center)
Cho, Yong-Soo (Department of Materials Science and Engineering, Yonsei University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.21, no.4, 2011 , pp. 147-152 More about this Journal
Abstract
ZnO nanorods fabricated on a Zn substrate pre-coated with ZnO as a seed layer by the hydrothermal method were studied mainly as a function of ZnO precursor concentration. Characteristic features by using field-emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD) were investigated to define the changed micro-structure and crystalline phase of the ZnO nanorods according to the experimental conditions. The nanorod morphology strongly depended on the precursor concentration. For example, ZnO nanorods vertically aligned with a hexagonal (002) oriented structure with a diameter of 600~700 nm and length of $6.75{\mu}m$ were clearly observed at the highest concentration of 0.015 M. The strong hexagonal structure was believed to be associated with the highest photoluminescene (PL) intensity and a promising voltage value of ca. 6.069 V at $1000{\mu}A$.
Keywords
ZnO; Nanorod; Hydrothermal method;
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