Journal
MATERIALS LETTERS
Volume 92, Issue -, Pages 161-164Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2012.10.086
Keywords
YAG:Ce3+; Phosphors; Post-annealing; Photobleaching; Luminscence; Hydrothermal
Funding
- National Natural Science Foundation of China [21176051, 61166008]
- Key Project of Chinese Ministry of Education [211141]
- Guangxi Natural Science Foundation [2012GXNSFFA060002]
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Y2.9Ce0.1Al5O12 (YAG:Ce3+) phosphors with 80 +/- 5 nm are successfully prepared by hydrothermal processing followed by the post annealing process in Ar/15%H-2 atmosphere. The emission intensity of the as-prepared YAG:Ce3+ nano-phosphor is as high as with that of the similar to 15 mu m YAG:Ce3+ commercial phosphor. Meanwhile, the YAG:Ce3+ nano-phosphors prepared in both Ar/15%H-2 and air atmosphere show same stable emission intensity Under continuous irradiation of blue excitation light, although this photobleaching behavior is easily observed for YAG:Ce3+ nano-phosphors in the literatures. Photobleaching is probably suppressed by complete crystallinity due to the post annealing process and solid morphology due to the hydrothermal process in the present work. (C) 2012 Elsevier B.V. All rights reserved.
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