Facile preparation of Y2.9Ce0.1Al5O12 nano-phosphors without photobleaching behavior

Facile preparation of Y2.9Ce0.1Al5O12 nano-phosphors without photobleaching behavior
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轻松制备 Y2.9Ce0.1Al5O12 纳米荧光粉且无光漂白行为

DOI:
10.1016/j.matlet.2012.10.086
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发表时间:
2013-02
期刊:
影响因子:
3
通讯作者:
A. B. Yu
A. B. Yu
中科院分区:
材料科学3区
文献类型:
--
作者:
L. Yuan;C. Zhang;F. S. Li;A. B. Yu

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通过水热处理和Ar/15%H2气氛中的后退火工艺,成功制备了80±5nm的Y2.9Ce0.1Al5O12(YAG:Ce3+)荧光粉。所制备的YAG:Ce3+纳米荧光粉的发射强度与~15μm YAG:Ce3+商业荧光粉的发射强度一样高。同时,在Ar/15%H2和空气气氛中制备的YAG:Ce3+纳米荧光粉在蓝色激发光的连续照射下表现出相同稳定的发射强度,尽管文献中YAG:Ce3+纳米荧光粉很容易观察到这种光漂白行为。由于后退火过程导致的完全结晶度和由于本工作中的水热过程导致的固体形态,光漂白可能受到抑制。
Y2.9Ce0.1Al5O12(YAG:Ce3+) phosphors with 80±5nm are successfully prepared by hydrothermal processing followed by the post annealing process in Ar/15%H2atmosphere. The emission intensity of the as-prepared YAG:Ce3+nano-phosphor is as high as with that of the ∼15μm YAG:Ce3+commercial phosphor. Meanwhile, the YAG:Ce3+nano-phosphors prepared in both Ar/15%H2and 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.
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