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Influence of Co Doping on the Optical Properties of ZnO Thin Films | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 21, Issue 5, 2010, Pages 41-47 | ||
| Author | ||
| Nadir Fadhil Habubi | ||
| Abstract | ||
| Undoped and Co doped ZnO samples with two different percentage of Co content (1 %, 3 % ) were prepared by a chemical spray deposition technique. The effect of doping with cobalt on the absorption spectra of ZnO thin films has been studied. The optical transmission (T %) in the wavelength range (300-1100) nm of films deposited on glass was measured. The absorption coefficient exhibits exponential dependence on photon energy obeying Urbach’s rule in the absorption edge, it was found to be doping dependent. Optical constants like refractive index, extinction coefficient and dielectric constants (εr),( εi) are calculated and correlated with sputtering time | ||
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