The morphological properties of the surface and optical characteristics ofudnanocomposite ZnO:Co structures grown on substrates of monocrystalline silicon andudsapphire by pulsed laser deposition (PLD) method have been studied. The influence ofudthermal annealing on formation of characteristically developed surface of films has beenudanalyzed. The experimental transmission and reflectance spectra in the visible regionudhave been measured. In the framework of the dielectric function, the optical constants nudand k and dispersion parameters of oscillators that provide the best fit with experimentaluddata have been obtained. From the infrared reflectance spectra of ZnO:Co structures, theudfrequency positions of Е₁(LO) and Е₁(ТО) optical phonons have been determined. Itudgives a possibility to suppose that the obtained films possess the wurtzite structure.
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