red emitting phosphors based on titanite with high thermal stability
Clicks: 179
ID: 162833
2016
Red emitting phosphors based on titanite, (Ca1−x−yEuxNay)TiSiO5+δ (x = 0.05, 0.07, 0.10; y = 0, 0.01, 0.03, 0.05), were synthesized by the conventional solid state reaction method, and their photoluminescence properties were investigated. Among (Ca1−xEux)TiSiO5+δ (x = 0.05, 0.07, 0.10), (Ca0.93Eu0.07)TiSiO5+δ (x = 0.07) showed the highest emission intensity of 14% in comparison with the commercial (Y0.98Eu0.02)2O2S phosphor. Introduction of monovalent Na+ into the (Ca0.93Eu0.07)TiSiO5+δ lattice also enhanced the emission intensity by preventing the reduction of Ti4+ to Ti3+. Consequently, the (Ca0.90Eu0.07Na0.03)TiSiO5+δ phosphor enhanced the emission intensity up to 22%. From the thermal analysis results, it is revealed that the thermal stability of the present (Ca0.90Eu0.07Na0.03)TiSiO5+δ phosphor was much higher than that of the commercial one.
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wendusu2016journalred
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Authors | ;Wendusu;Yoshiki Asakawa;Naoyoshi Nunotani;Nobuhito Imanaka |
Journal | offshore |
Year | 2016 |
DOI | 10.1016/j.jascer.2016.01.004 |
URL | |
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