Abstract
ZnO:Fe powders have been prepared by sol–gel method with different calcination temperatures (650°C, 750°C, 850°C and 950°C). The crystal structures and optical properties were investigated by X-ray diffraction (XRD), Raman spectra and Photoluminescence (PL). The XRD results demonstrated that all of the samples were hexagonal wurtzite structure, and with the increase of calcination temperature, the diffraction peak of (002) slightly shifts to larger degree. Furthermore, the lattice vibrations have been investigated by Raman spectra, with the increase of calcination temperature, the representative peak E2high of ZnO shifts from 437.5 to 434cm−1, corresponding to degradation of crystalline quality. Also, the dependence of PL spectra on calcination temperature has been investigated detailed.
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