ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Green phosphors of the composition Ce1-xTbxMgAl11O19 (0.1 〈 x 〈 0.6) were prepared via self-propagating (combustion) synthesis, using urea as a fuel. The phosphors that were produced via the combustion route were fine powders and produced a luminous intensity of 72%, compared to an optimized commercial phosphor. The excitation spectra were characteristic of the Ce3+ cation; however, no Ce3+ emission was observed. Energy transfer from the Ce3+ cation to the Tb3+ cation was complete, and only the 542 nm Tb3+ emission was observed. Concentration quenching occurred with x 〉 0.5. Scanning electron microscopy images showed a well-crystallized, platelike morphology, with a particle size of 10-20 µm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.1999.tb01881.x
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