Facile Synthesis of ( Sr, Ca) AlSiN3: Eu2+ Phosphor and Its LED Packging Performance
ZHANG Yanjie
HU Zeqing
KOU Jing
YU Jingjie
ZOU Nianyu
Abstract：A series of ( Sr, Ca) AlSiN3: Eu2+ phosphors have been successfully prepared by solid state reaction under atmospheric pressure and the effect of synthetic methods ( atmospheric pressure synthesis and high pressure synthesis) on crystal structure, photoluminescence property and morphology of phosphor was also conducted. The ( Sr, Ca ) AlSiN3: Eu2+ phosphors prepared by atmospheric-pressure synthesis method exhibit an ideal luminescent intensity, and the emission peak located on 615 nm~640 nm. All the phosphors exhibit orthorhombic crystal structure similar with CaAlSiN3 structure. No impurity can be observed in XRD patterns of ( Sr, Ca) AlSiN3: Eu2+ phosphors. The obtained Sr0. 8 Ca0. 192 AlSiN3: 0. 008 Eu2+ phosphor was further used as efficient red component to fabricate white light emitting diodes ( LEDs) . Under the optimized condition of LED packaging, the white LEDs own the excellent optical properties with luminous efficiency of 86. 8 lm/W and an ideal color rendering index (Ra =85). Furthermore, the color correlated temperature (4000K~6000K) of white LEDs can be simply adjusted through changing the red phosphor ratio.
Keywords：nitride phosphoratmospheric-pressure synthesisphotoluminescence propertywhite LEDs
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 10-14,20 )