Journal article

Influence of Co-doping on the structural, optical and morphological properties of Zn0.96Mn0.04O nanoparticles by sol-gel method

S Sivaselvan, S Muthukumaran, M Ashokkumar



Zn0.96-xMn0.04CoxO (0 ≤ x ≤ 0.08) nanoparticles were successfully synthesized by sol-gel method. The structural and optical properties of the samples were investigated by X-ray diffraction and UV-visible photo-spectrometer. The X-ray diffraction results and c/a ratio revealed that the hexagonal wurtzite structure of ZnO is not affected by Mn/Co doping. The decreased average crystal size from 21.9 nm (Co = 0%) to 16.8 nm (Co = 6%) was due to the increase of tensile stress. The energy dispersive X-ray spectra showed the excellent oxide formation and the presence of Mn and Co in ZnO. The observed green band around 492 nm for Co = 2% and 482 nm for Co = 4% were originated from oxygen vacancies a..

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University of Melbourne Researchers