FU Yi-bing, HE Jin-hua, LIANG Chao etc. Blue-green Phosphors in Full Spectrum Lighting LEDs[J]. Chinese Journal of Luminescence, 2018,39(9): 1220-1224 DOI: 10.3788/fgxb20183909.1220.
Blue-green Phosphors in Full Spectrum Lighting LEDs
blue-green phosphor was synthesized by high temperature solid-state method. Under the excitation of blue light
BaSi
2
O
2
N
2
:Eu
2+
phosphor emits blue-green light with peak wavelength at 488 nm. Co-doped with Mg
2+
and Ge
4+
ions
the thermal quenching property of BaSi
2
O
2
N
2
:Eu
2+
was significantly improved
which helps to improve the aging performance of WLED. By using BaSi
2
O
2
N
2
:Eu
2+
blue-green phosphor
Y
3
(Al
Ga)
5
O
12
:Ce
3+
yellow-green phosphor and CaAlSiN
3
:Eu
2+
red phosphors
the Ra of the blue-chip based WLED reaches 96.5
and all the special color rendering indices (R1-R15) of the WLED are over 90
which meet the requirements of full spectrum WLED lighting.
关键词
Keywords
references
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