期刊
APPLIED PHYSICS LETTERS
卷 101, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4742896
关键词
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资金
- National Natural Science Foundation of the People's Republic of China [51002098]
- Doctoral Program of Higher Education [20090181120092]
- Science and Technology Project in Chengdu [11DXYB313JH-027]
- National High Technology Research and Development Program 863
We present our recent achievement of a transparent ceramic able to produce white light when directly combined with commercially available blue light emitting diodes. The photoluminescence properties of ceramic phosphor (Y1-xCex)(3)Al5O12 are studied as a function of doping fraction (x = 0.0005-0.0020). The emission color is tunable by variations of Ce3+ concentration and ceramic phosphor thickness. A maximum luminous efficacy exceeding 93 lm/W at a low correlated color temperature of similar to 4600 K is obtained, which is superior to samples made from commercial phosphor powders. Hence, the present transparent ceramic phosphor is expected to be an ideal candidate for generating white light. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4742896]
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