| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1489617 | Materials Research Bulletin | 2011 | 8 Pages |
We report here our results in the preparation of ZnO films with high UV band to band characteristic luminescence emission by potentiostatic electrodeposition. Zinc nitrate aqueous baths with different concentration and additives were employed for the preparation of the films on platinum substrates. We focused our research in determining how the electrodeposition bath composition, i.e. zinc nitrate concentration and addition of KCl or polyvinyl pyrolidone and applied overpotential influence the morphological and optical properties of the oxide films. Scanning electron microscopy was employed for characterizing the films in terms of morphology. Optical reflection, photoluminescence spectroscopy and cathodoluminescence were used for determining the optical characteristics of the samples. The morphology of the deposit varies from hexagonal prisms to platelets as a function of the deposition rate. This experimental parameter also influences the luminescence properties. We found that at low deposition rates high UV luminescent material is obtained.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Electrodeposition of ZnO from nitrate baths is investigated. ► The influence of process parameters on morphological and optical properties is studied. ► Experimental conditions to fabricate ZnO films with high UV emission were found.
