Three series silicate phosphors(A:(SrBa)

3

SiO

5

:0.024Ce

3+

0.024Li

+

;B:Sr

2.73

M

0.2

SiO

5

:0.07Eu

2+

(

M

=Ba

Mg

Ca);C:(SrBa)

3

SiO

5

:xEu

2+

)were synthesized by solid reaction method.Their excitation and emission spectra were measured.There are two exitation peaks(351 nm and 418 nm

418 nm is stronger) for Ce

3+

-activated(Series A) silicate phosphors.With increasing the content of Ba ion

their emission peaks change to longer wavelength.Consequently

we can change its color then at the end adjust the CIE chromaticity and color rendering index of white-LED.Eu

2+

-activated(Series Band C) silicate phosphors have broad excitation bands from 350 nm to 450 nm.The emission peaks of Ce

3+

-activated silicate phosphors are 540～555 nm and shorter than Eu

2+

-activated silicate phosphors

while the emission peaks of Eu

2+

-activated silicate phosphors are at 570～583 nm.For the series B(Sr

2.73

M

0.2

SiO

5

:0.07Eu

2+

(

M

=Ba

Mg

Ca))

it's better when

M

=Ba.At the series C((SrBa)

3

SiO

5

:xEu

2+

)

their emission peaks and FWHM change with no obvious rule.The emission peaks of Ba-doped Sr

3

SiO

5

:Ce

3+

Li

+

and Sr

3

SiO

5

:Eu

2+

shifted to longer wavelength.Both of them can be used for packaging white-LED with NUV

UV and blue LED chip.