Zinc oxide (ZnO) microrods were grown by the floating zone method, the as-grown ZnO microrods have uniform size. Scanning electron microscope image reveals that the ZnO microrods are grown with a hexagonal structure, well faceted ends and side surfaces. Most of ZnO microrods have diameters of about 20–30nm and lengths of about 1–2 mm. Polarizing microscopy image of ZnO microrods shows that they have high crystal quality. The X-Ray diffraction pattern shows that microrods have vertical orientation. The Raman spectra demonstrate that the vibrational mode of wurtzite-type ZnO clearly. The room temperature photoluminescence measurements indicate that the microrods have a relative strong ultraviolet (UV) emission and very weak green emission.
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