Abstract
ZnO nanoflowers were successfully prepared by a new non-catalytic method based on directly heating of Zn strip using a direct current power supply. The Zn strip was obtained by electrodeposition on silicon wafer with laser etching. The nanoflowers, with a size more than 15μm, are assembled by nanowires with a length of 10μm and a diameter of 100nm, and the length/diameter ratio is about 100. The samples were characterized by means of scanning electron microscope, X-ray diffraction and Raman. X-ray diffraction results show that the formation of nanoflowers is controlled by the current density. Raman modes of nanoflower corresponds well with X-ray diffraction result. Photoluminescence property of ZnO nanoflowers shows strong green emission and violet emission.
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