Preparation and Luminescent Properties of Nano Crystal CaO ∶ Eu3+
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Preparation and Luminescent Properties of Nano Crystal CaO ∶ Eu3+
Chinese Journal of LuminescenceVol. 30, Issue 5, Pages: 640-643(2009)
作者机构:
哈尔滨师范大学 黑龙江省纳米功能材料研究重点实验室, 黑龙江 哈尔滨 150080
作者简介:
基金信息:
DOI:
CLC:O482.31
Received:25 November 2008,
Revised:02 January 1900,
Published Online:30 October 2009,
Published:30 October 2009
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JIANG Xiao-lan, LU Shu-chen. Preparation and Luminescent Properties of Nano Crystal CaO ∶ Eu3+[J]. Chinese journal of luminescence, 2009, 30(5): 640-643.
DOI:
JIANG Xiao-lan, LU Shu-chen. Preparation and Luminescent Properties of Nano Crystal CaO ∶ Eu3+[J]. Chinese journal of luminescence, 2009, 30(5): 640-643.DOI:
Preparation and Luminescent Properties of Nano Crystal CaO ∶ Eu3+
powders were prepared by co-precipitation method in this paper. Luminescent properties of CaO : Eu
3+
with different sintering temperatures and dopant concentrations were studied. The results indicated that the samples have sharp characteristic emissions spectra of Eu
3+
. With the comparison of emission spectra of CaO : Eu
3+
annealed at different temperatures
the integral intensity ratio of the peaks between 591 nm and 610 nm is found to decline with the temperature increasing. It was revealed that the rare earth ions (Eu
3+
) occupy different lattice position in the samples with different sintering temperatures. The change transfer state was observed between O
2-
and the rare earth Eu
3+
ion.The effect of the doped Eu
3+
concentration on the fluorescence emission intensity was discussed
and the results showed the concentration quenching depends on the doped Eu
3+
concentration. The optimum dopant concentration for the luminescence of Eu
3+
is determined to be 0.4%.
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references
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