Please use this identifier to cite or link to this item: doi:10.22028/D291-24581
Title: Effect of solvent, host precursor, dopant concentration and crystallite size on the fluorescence properties of Eu(III) doped yttria
Author(s): Sharma, Pramod K.
Nass, Rüdiger
Schmidt, Helmut K.
Language: English
Year of Publication: 1998
OPUS Source: Optical materials. - 10. 1998, 2, S. 161-169
SWD key words: Dotant
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: A systematic spectroscopic study of Eu3+ doped yttria powder phosphors are reported. Fluorescence study of this system has been investigated under the different solvent systems, e.g ethanol and water. In this study, the effect of the precursor of yttria, e.g. acetate, nitrate and chloride, on the fluorescence behaviour of Eu3+ have been observed in particular. Attention was paid to their effect on the emission intensity of the 5D0 -> 7F2 transition which is characteristic of the 'red fluorescence' of the Eu3+ ion. Results show that the CH3COO- ion has a tremendous effect on the enhancement of emission intensity, greater than NO3- and Cl- ions. The Fourier transformed infrared (FTIR) spectroscopy was used for chemical and structural analysis. It has also been stated that the concentration quenching of dopant was more pronounced in the powders derived from yttrium chloride than from yttria precursor. In the case of Y(CH3COO)3 as a precursor, the concentration quenching was totally absent and emission intensity increased with an increase in the concentration of dopant. This paper also includes some interesting results on the effect of modifiers, which are a mixture of Tween-80 with ε-caprolactum/ β-alanine/emulsogen-OG, on the 5D0 -> 7F2 transition of Eu3+ doped yttria in terms of crystallite size in brief.
Link to this record: urn:nbn:de:bsz:291-scidok-28887
Date of registration: 11-Jun-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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