Abstract
Single crystalline ZnO nanorods with a diameter of about 5 nm were synthesized withoutthe presence of any surfactants in ethanol solvent at room temperature. Nanodots andnanorods with different size and shape could be observed by TEM via simplyaltering NaOH concentration and reaction time. The polar ZnO nanorod growthmechanism was discussed by the ‘Ostwald ripening’ mechanism. Optical absorption andphotoluminescence properties of ZnO nanorods have been characterized. The UVabsorption spectrum revealed a clear blue-shift with a single absorption peak centred at350 nm.
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