Journal
OPTICAL MATERIALS
Volume 88, Issue -, Pages 97-102Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2018.11.031
Keywords
Ce:GdYAG ceramics; Color converter; Luminous efficiency
Categories
Funding
- National key R&D Program of China [2017YFB0310500, 2016YFB0701004]
- National Natural Science Foundation of China [61575212, 61675221, 61775226]
- Chinese Academy of Sciences [QYZDB-SSW-JSC022]
Ask authors/readers for more resources
Transparent Ce:GdYAG ceramic phosphors with different Gd3+ contents were successfully prepared by the solid-state reaction method. The absorption and emission properties were investigated at different temperatures. The highest luminous efficiency of 123.7 lm/W was obtained by Ce:YAG ceramic phosphor with the thickness of 1 mm. The addition of Gd3+ results in red-shift and broadening of the emission band of Ce3+ so that the color rendering index (CRI) increases and the correlated color temperature (CCT) decreases obviously after packaged with blue light-emitting diode (LED). The color coordinates of the Ce:GdYAG ceramic phosphor with 50% Gd3+ content based white light device are located at the theoretical white light point in the CIE-1931 chromaticity diagram. And the various CRI and adjustable CCT of warm white light emitted by this device and the high luminous efficiency make Ce:GdYAG ceramics the most promising candidate for high-brightness white LEDs and laser diodes(LDs) device.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available