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        Ultra-fine UV Photoluminescence Emission at Room Temperature from an Individual ZnO Nanorod

        A. Hadi,H. Hajghassem,M. Dousti 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.5

        Highly crystalline Zinc Oxide(ZnO) nanorods and nanowires with hexagonal cross sections are grown on sputtered ZnO thin film as buffer layer, using physical vapor deposition (PVD) technique in absence of any catalyst. For experimental setup a double tubes furnace at atmospheric pressure has been utilized. The structural characteristics of samples are studied by field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS) and x-ray diffractometry (XRD). The optical properties of grown nanorods are investigated by micro photoluminescence (PL) spectroscopy. The results show that high quality ZnO nanostructures can be obtained by control of super saturation conditions during the growth process; while the XRD and EDS results revealed that these grown nanorods are single phase hexagonal ZnO with a perfect elemental stoichiometry. Micro PL measurement of a single nanorod results in fine spectra, in which, it exhibits a sharp ultra-violet (UV) emission bands, corresponding to near band edge (NBE) emission of crystalline ZnO, without any peak at green or orange region, which is normally related to crystal defects.

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