Ca-5(PO4)(3)F;
energy transfer;
luminescence enhancement;
rare earth co-doping;
white-emitting phosphor;
EFFICIENT ENERGY-TRANSFER;
PHOTOLUMINESCENCE PROPERTIES;
RED PHOSPHOR;
CHARGE COMPENSATION;
M-5(PO4)(3)F M;
LIGHT;
EMISSION;
DIODES;
DY3+;
LEDS;
D O I:
10.1111/jace.15701
中图分类号:
TQ174 [陶瓷工业];
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
A series of Ca-5(PO4)(3)F:Dy3+, Eu3+ phosphors was synthesized by a solid-state reaction method. The XRD results show that all as-prepared Ca-5(PO4)(3)F:Dy3+, Eu3+ samples match well with the standard Ca-5(PO4)(3)F structure and the doped Dy3+ and Eu3+ ions have no effect on the crystal structure. Under near-ultraviolet excitation, Dy3+ doped Ca-5(PO4)(3)F phosphor shows blue (486nm) and yellow (579nm) emissions, which correspond to (F9/2H15/2)-F-4-H-6 and (F9/2H13/2)-F-4-H-6 transitions respectively. Eu3+ co-doped Ca-5(PO4)(3)F:Dy3+ phosphor shows the additional red emission of Eu3+ at 631nm, and an improved color rendering index. The chromaticity coordinates of Ca-5(PO4)(3)F:Dy3+, Eu3+ phosphors also indicate the excellent warm white emission characteristics and low correlated color temperature. Overall, these results suggest that the Ca-5(PO4)(3)F:Dy3+, Eu3+ phosphors have potential applications in warm white light-emitting diodes as single-component phosphor.
机构:
Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R ChinaJilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
Fu, Zuoling
Wang, Xiaojie
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机构:
Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R ChinaJilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
Wang, Xiaojie
Yang, Yanmin
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机构:
Hebei Univ, Coll Phys Sci & Technol, Luminescence & Display Res Inst, Baoding 071002, Peoples R ChinaJilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
Yang, Yanmin
Wu, Zhijian
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机构:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resources Utilizat, Changchun 130022, Peoples R ChinaJilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
Wu, Zhijian
Duan, Defang
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机构:
Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R ChinaJilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
Duan, Defang
Fu, Xihong
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机构:
Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R ChinaJilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China