Abstract
Zn0.96−xFexMn0.04O (0 ≤ x ≤ 0.04) nanoparticles have been successfully synthesized using sol–gel method. The crystal structure, microstructure and optical properties were examined by X-ray diffraction (XRD), scanning electron microscope, transmission electron microscope, UV–visible optical studies and photoluminescence spectra. Diminishing XRD intensity, peak position shift and change in lattice parameters were explained based on crystallite size and Fe-doping concentration. The optical properties confirmed that the crystallinity of Zn0.96−xFexMn0.04O nanoparticle was deteriorated due to Fe-doping. Fourier transform infra red spectra confirmed the substitution of Fe into Zn–Mn–O. The enhanced energy gap revealed the inducement of free carriers by Fe substitution into Zn–Mn–O network. The broad luminescence spectra and the quenching of visible emission intensity were discussed in detail.
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