Enhanced room temperature ferromagnetism in electrodeposited Co-doped ZnO nanostructured thin films by controlling the oxygen vacancy defects
作者： A. Simimol , Aji A. Anappara , S. Greulich-Weber , Prasanta Chowdhury , Harish C. Barshilia
DOI: 10.1063/1.4922050
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摘要: We report the growth of un-doped and cobalt doped ZnO nanostructures fabricated on FTO coated glass substrates using electrodeposition method. A detailed study effects dopant concentration morphology, structural, optical, magnetic properties has been carried out systematically by varying Co (c.Co) from 0.01 to 1 mM. For c.Co ≤ 0.2 mM, h-wurtzite phase with no secondary phases were present in nanostructures. c.Co ≤ 0.2 mM, photoluminescence spectra exhibited a decrease intensity ultraviolet emission as well band-gap narrowing an increase concentration. All samples displayed broad visible range its increased It was found that defect centers such oxygen vacancies zinc interstitials source emission. The X-ray photoelectron spectroscopy studies revealed, primarily divalent s...
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