Abstract
Mn-doped ZnO nanocrystal was prepared on Si substrates by cathodic electrodeposition. X-ray diffraction (XRD) study suggests that the Mn ions are substituted for Zn position into ZnO crystal. Field-emission scanning electron microscopy (SEM) images show the column-like morphology of ZnO nanocrystal. In photoluminescence spectrum, the visible emission band is broadened because of the doping effect. The fitted result of the temperature-dependent PL spectra in the range from 122.8 K to 302.2 K indicates that Mn dopant could lead to the decrease of the exciton binding energy.
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