Abstract
A (Ce0.67Tb0.33)MnxMg1-xAl11 O19 phosphor powder was synthesized, using a simple sol-gel process, by mixing citric acid with CeO2, Tb4O7, Al(NO3)3·9H2O, Mg(OH)2·4MgCO3·6H2O, and Mn(CH3COO)2. The phosphor crystallized completely at 1200°C, and the phosphor particle size was between 1 and 5 μm. The excitation spectrum was characteristic of Ce3+, while the emission spectrum was composed of lines from Tb3+ and Mn2+. The Mn2+ gave a green fluorescence band, and concentration quenching occurred when x > 0.10. The luminescent properties of the phosphor were explained by a configurational coordinate model.
| Original language | English |
|---|---|
| Pages (from-to) | 998-1000 |
| Number of pages | 3 |
| Journal | Journal of the American Ceramic Society |
| Volume | 85 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2002 |
| Externally published | Yes |
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