Article ID Journal Published Year Pages File Type
7909019 Optical Materials 2015 7 Pages PDF
Abstract
ZrO2, ZrO2:Dy3+ and ZrO2:Dy3+, Gd3+ films were synthesized using the Pyrosol technique. These films have a ZrO2-metastable tetragonal crystalline structure, which is better defined as the deposition temperature increases. Photoluminescence and cathodoluminescence properties of these films were studied as a function of deposition parameters such as substrate temperature and Dy3+ and Gd3+ relative concentrations. All luminescent emission spectra showed the typical electronic transitions 4f → 4f of the Dy3+ ions at 480, 574 and 655 nm. The luminescent intensity is observed to increase with the Dy3+ ion concentration up to 7 at.% in the spraying solution (1.8 at.% inside films), higher concentration result in an inhibition of the luminescence. Incorporation of Gd3+ ions in ZrO2:Dy3+ films produced a marked increase in the luminescent emission intensity (approximately 15 times). The elemental composition and surface morphology of these films are also reported.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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