ZHANG Rui-xi;WANG Hai-bo;HUANG Ru-xi;XIE Ye;LIN Hai-feng. Preparation and Package Performances of Red Phosphor for LED[J]. 发光学报, 2010,31(3): 305-310DOI:
Preparation and Package Performances of Red Phosphor for LED
europium oxide and tungsten oxide. The spectral properties and morphology were exhibited by fluorescence spectrometer and SEM
respectively. The result showed that there is a wide excitation spectrum of this phosphor being suitable for LED chips with near-ultraviolet(NUV)
blue or green emission. Its emission peak locates at 615 nm
and the emission chromaticity coordinates are
x
=0.666
y
=0.331; Milling obviously impacts on its morphology. Sulfide phosphor and LiEuW
2
O
8
phosphor were encapsulated
respectively
to compare their properties
the result showed that the latter can also decrease color temperature
and more importantly
the luminous efficiency is less affected
it can keep 60 lm/W above when color temperature is 4 000 K.
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Keywords
references
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Related Institution
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