期刊
JOURNAL OF LUMINESCENCE
卷 204, 期 -, 页码 626-632出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2018.08.076
关键词
Phosphor; Luminescence; Red-orange; Eu3+ - doped
类别
资金
- Qinghai Provincial Natural Science Foundation for Young Scholars [2017-ZJ-929Q]
- National Natural Science Foundation of China [51802172]
- Qinghai Provincial Innovation Platform Program [2017-ZJ-Y17]
Novel Sr9R(PO4)(7) (R = In, Ga) host materials for Eu3+ - doped phosphors were synthesized by a high-temperature solid-state reaction method. The crystal structure, luminescence properties and thermal stability of the phosphors were explored. The phase analysis indicated that the phosphors crystallized in monoclinic structure, the emission spectra of both In and Ga containing phosphors were mainly composed of two sharp peaks centered at about 591 and 617 nm, corresponding to the D-5(0)-> F-7(1) and D-5(0)-> F-7(2) transitions of Eu3+ ions. While, the relative emission and excitation intensities of Sr9In(PO4)(7): Eu3+ were weaker than Sr9Ga(PO4)(7): Eu3+. Moreover, the energy transfer mechanism among Eu3+ ions in the phosphors depended upon energy transfer among the nearest-neighbor ions described by the Dexter theory. The selected Sr9In(PO4)(7): 0.06Eu(3+) and Sr9Ga (PO4)(7): 0.06Eu(3+) exhibited high thermal stability and the chromaticity coordinate of the phosphors were located in the red-orange light region.
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