期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 104, 期 1, 页码 524-534出版社
WILEY
DOI: 10.1111/jace.17439
关键词
glass; luminescence; phosphors
资金
- National Natural Science Foundation of China [51672266, 51750110511, 51672257, 51672259, 51902226, 51672265]
- Key Research Program of Frontier Sciences [YZDY-SSW-JSC018]
- Scientific and Technological Department of Jilin Province [20150520029JH, 20170414003GH]
- Jiangmen Innovative Research Team Program [2017]
- Major program of basic research and applied research of Guangdong Province [2017KZDXM083]
- Science and Technology Projects of Jiangmen [307, 149, 352]
- Innovative Leading Talents of Jiangmen [7]
- Key Laboratory of Optoelectronic materials and Applications in Guangdong Higher Education [2017KSYS011]
- Chinese Government [2017YFE0132300]
- Australian Government [2017YFE0132300]
White LEDs (w-LEDs) have gained worldwide attention due to their economic benefits. A yellow-orange garnet-structural phosphor, Ba2YAl3Si2O12:xCe(3+), was developed with highly efficient emission and good thermal stability. Utilizing this phosphor, a high-power warm w-LED was achieved with high illuminance.
With great economic benefits, white LEDs (w-LEDs) have aroused worldwide attention. For phosphor-converted w-LED, highly efficient emission and good thermal stability of phosphor are significant parameters in practical application. Here, a yellow-orange garnet-structural phosphor, Ba2YAl3Si2O12:xCe(3+)(x = 0-0.1) (BYAS:xCe(3+)) was developed by solid solution design. The broad emission spectrum of the as-synthesized phosphor could guarantee the effective increase of the color rendering index when it is combined with the InGaN blue chip. Benefiting from the garnet-type highly rigid framework, BYAS:xCe(3+)exhibits an excellent thermal stability (50%@673K of the initial integrated intensity at 280 K) as well as high absolute quantum efficiency (80.4%@460 nm excitation light). Utilizing the approach of phosphor-in-glass (PiG), a high-power warm w-LED is achieved based on a blue LED plus PiG and the illuminance of this w-LED device can be as high as 4227 lx.
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