WANG Xi-feng;XIA Wei;XIAO Zhi-guo. Synthesis and Luminescent Properties of a Novel Red Phosphor CaAl<sub>12</sub>O<sub>19</sub>&nbsp;: Eu,Mn[J]. Chinese Journal of Luminescence, 2009,30(3): 405-408
WANG Xi-feng;XIA Wei;XIAO Zhi-guo. Synthesis and Luminescent Properties of a Novel Red Phosphor CaAl<sub>12</sub>O<sub>19</sub>&nbsp;: Eu,Mn[J]. Chinese Journal of Luminescence, 2009,30(3): 405-408DOI:
Mn was synthesized by solid reaction method. The structure
excitation and emission spectra of samples of phosphors were analyzed by XRD and F-4500
the influence of the calcination temperature and the concentration of Eu
3+
on the luminescent performance of samples was observed.The influence mechanism of Eu
3+
was studied. The results showed that the phosphors can be excited by the ultraviolet
near-ultraviolet
blue and green light below 550 nm
the emission peaks are at 590
615
645
657 nm
the peaks 590
615 nm are the characteristic emission of Eu
3+
the another two peaks are the
2
E-
4
A
2
transition emission of Mn
4+
. The experiments showed that the optimal calcination temperature and time are 1 550 ℃ and 4 h
respectively
the optimal mol fraction of Eu
3+
is 0.11%.
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references
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