| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1487986 | Materials Research Bulletin | 2014 | 4 Pages |
•A novel red phosphor Ca19Mg2(PO4)14:Sm3+ was synthesized and investigated firstly.•The structure and characteristic luminescence properties are discussed.•The excellent thermal stability was found and investigated.•It has good color saturation, the CIE is close to that of commercial Y2O3:Eu3+.
A series of Sm3+ doped Ca19Mg2(PO4)14 red phosphors were successfully synthesized. X-ray diffraction analysis indicates that all the samples are single phased. The luminescence property is investigated in detail by measuring their photoluminescence excitation and emission spectra. Ca19Mg2(PO4)14:Sm3+ phosphors show strong absorption in 400–410 nm region, which is suitable for application in LEDs. When excited at 403 nm, Ca19Mg2(PO4)14:Sm3+ phosphor can emit red emission with CIE chromaticity coordinates (0.615, 0.384). The optimal doping concentration of Sm3+ doped Ca19Mg2(PO4)14 is measured to be 0.02. The thermal quenching property is also measured and compared with the commercial red phosphor Y2O3:Eu3+ (Topstar, TXC-RIA). The results indicate Ca19Mg2(PO4)14:Sm3+ phosphors have potential to serve as a red phosphor for white LEDs.
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