期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 2, 期 30, 页码 6032-6039出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tc00488d
关键词
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资金
- National Natural Science Foundations of China [51002146, 51272242]
- Natural Science Foundations of Beijing [2132050]
- Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-12-0950]
- Beijing Nova Program [Z131103000413047]
- Beijing Youth Excellent Talent Program [YETP0635]
- State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University [KF201306]
- University of Science and Technology Beijing
The orthophosphate phosphors ABaPO(4):Eu2+ (A = K, Rb) have been studied in this paper. The continuous solid-solution phases in (K-X,Rb1-X)BaPO4 have been determined and the phase structure evolution and its dependence on the K: Rb ratio have been discussed, and all the Eu2+-doped (K-X,Rb1-x)BaPO4 phosphors show a blue emission, peaking at approximately 420 nm, originating from the 4f-5d transition of Eu2+. The differences in the fine microstructure have been investigated and the effect on the photoluminescence behavior, especially the thermally stable luminescence, has been studied for this series of solid-solution phosphors. The relationship between the activation energy and thermally stable luminescence is also discussed. The compositionally optimized (K-X,Rb1-X)BaPO4:Eu2+ phosphor can be potentially applied in phosphor-converted white light-emitting diodes (w-LEDs).
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