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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.16 [2009] >
IJEMS Vol.16(3) [June 2009] >
| Title: | Luminescence studies during combustion synthesis of a long afterglow phosphor Sr4Al14O25:Eu2+, Dy3+ |
| Authors: | Suriyamurthy, N
Panigrahi, B S |
| Issue Date: | Jun-2009 |
| Publisher: | CSIR |
| Abstract: | The long glow persistent phosphor Sr4Al14O25:Eu2+, Dy3+ has been synthesized through combustion route. SrAl4O7 and SrAl2O4 are identified as the intermediate products formed at different temperatures during the synthesis of Sr4Al14O25:Eu2+,Dy3+. The photoluminescence and afterglow emission of the intermediate products have been systematically studied. The photoluminescence and afterglow emission profiles of the intermediate products varied with the temperature of synthesis. For a sample with similar aluminate phases (at a particular synthesis temperature) the λAGL and λPL are different. However, for Sr4Al14O25:Eu2+,Dy3+ annealed at 1200-1300ºC, the AGL and PL emissions are similar. |
| Page(s): | 178-180 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.16(3) [June 2009]
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