Electrodeposited ZnO films with high UV emission properties

Journal Article · Tue Nov 15 04:00:00 EST 2011 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2011.04.025· OSTI ID:22210142

Matei, Elena ^[1]; Enculescu, Ionut ^[1]

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1. National Institute of Materials Physics, PO Box MG 7, 77125 Magurele, Ilfov (Romania)

Highlights: {yields} Electrodeposition of ZnO from nitrate baths is investigated. {yields} The influence of process parameters on morphological and optical properties is studied. {yields} Experimental conditions to fabricate ZnO films with high UV emission were found. -- Abstract: 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.

• OSTI ID: 22210142
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 11 Vol. 46; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CATHODOLUMINESCENCE
DEPOSITS
ELECTRODEPOSITION
FILMS
OPTICAL PROPERTIES
OPTICAL REFLECTION
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
SPECTROSCOPY
ZINC NITRATES
ZINC OXIDES