期刊
OPTICS LETTERS
卷 40, 期 23, 页码 5479-5481出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.40.005479
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资金
- National High Technology Research and Development Program of China [2013AA031901]
- National Natural Science Foundation of China (NSFC) [51172254, 51202269, 61475172]
The two-phase MgAl2O4-Ce:YAG ceramic phosphor was fabricated by the solid-state reaction in vacuum, and it presented a better luminous efficacy than the single-phase transparent ceramic phosphor when directly combined with the blue light-emitting diodes. The addition of MgAl2O4 implemented the control of the grain sizes and the variation of microstructure, and the microstructure optimization further improved the luminous efficacy of the composite phase ceramic phosphor. A maximum luminous efficacy attaining 99 lm/W at the correlated color temperature 5000 K was obtained. The composite phase ceramic phosphor is expected to be a promising candidate for use in the highpower light source. (C) 2015 Optical Society of America
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