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Start Over Author "Sun, X. W." Publication Type Conference Materials
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2. Room Temperature Photoluminescence Properties of ZnO Nanorods Grown by Hydrothermal Reaction.

Author

Iwan, S., Fauzia, Vivi, Umar, A. A., and Sun, X. W.

Subjects
PHOTOLUMINESCENCE, ZINC oxide, NANORODS, HYDROTHERMAL alteration, ANNEALING of metals
Abstract

Zinc oxide (ZnO) nanorods were fabricated by a hydrothermal reaction on silicon (Si) substrate at 95 °C for 6 hours. The ZnO seed layer was fabricated by depositing ZnO thin films on Si substrates by ultrasonic spray pyrolisis (USP). The annealing effects on crystal structure and optical properties of ZnO nanorods were investigated. The postannealing treatment was performed at 800 °C with different environments. The annealed of ZnO nanorods were characterized by X-ray diffraction (XRD) and photoluminescence (PL) in order to analyze crystal structure and optical properties, respectively. The results show the orientations of [002], [101], [102], and [103] diffraction peaks were observed and hexagonal wurtzite structure of ZnO nanorods were vertically grown on Si substrates. The room temperature PL spectra show ultra-violet (UV) and visible emissions. The annealed of ZnO nanorods in vacuum condition (3.8 x 10-3 Torr) has dominant UV emission. Meanwhile, non-annealed of ZnO nanorods has dominant visible emission. It was expected that the annealed of ZnO in vacuum condition suppresses the existence of native defects in ZnO nanorods. [ABSTRACT FROM AUTHOR]

Published
2016
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