Journal
JOURNAL OF RARE EARTHS
Volume 30, Issue 7, Pages 632-636Publisher
ELSEVIER
DOI: 10.1016/S1002-0721(12)60103-3
Keywords
LED; solid solutions; phosphor; luminescence; rare earths
Categories
Funding
- National Natural Science Foundation of China [90922027]
- National High Technology Research and Development Program of China [2009AA03Z432]
- Ph. D. Programs Foundation of Education Ministry of China [20100006110011]
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Divalent europium activated tristrontium dialuminum hexaoxide phosphor, (Sr1-xEux)(3)Al2O6, was obtained by solid state reaction. Crystal structure and luminescence properties of synthesized (Sr1-xEux)(3)Al2O6 were investigated. The major excitation band of (Sr1-xEux)(3)Al2O6 located in blue light region, the photoluminescence spectrum showed red light emission peaked at 618 nm which could be attributed to the d-f transition of the Eu2+. The influence of Ca2+ substitution for Sr2+ on structural and luminescence properties of Eu2+ doped Sr3Al2O6 was also studied. The photoluminescence peak position of (Sr1-yCay)(2.94)Eu0.06Al2O6 varied from 618 to 655 nm with increasing gamma value. The reason for redshift in the emission band of (Sr1-yCay)(2.94)Eu0.06Al2O6 phosphor was also discussed.
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