XU Lei-hua, QIANG Ying-huai, JIANG Li, Gu Yong-qin. Influence of Annealing Temperature and CdS QD-doping on The Photoluminescence Properties of Eu<sup>3+</sup> Doped Silica Xerogels[J]. Chinese Journal of Luminescence, 2011,32(8): 784-788
XU Lei-hua, QIANG Ying-huai, JIANG Li, Gu Yong-qin. Influence of Annealing Temperature and CdS QD-doping on The Photoluminescence Properties of Eu<sup>3+</sup> Doped Silica Xerogels[J]. Chinese Journal of Luminescence, 2011,32(8): 784-788 DOI: 10.3788/fgxb20113208.0784.
Influence of Annealing Temperature and CdS QD-doping on The Photoluminescence Properties of Eu3+ Doped Silica Xerogels
/CdS nanoparticles were prepared through a two-step hydrolysis process. The effect of annealing temperature on photoluminescence properties of Eu
3+
-doped silica xerogel was investigated. The results showed that the photoluminescence intensity of Eu
3+
-doped silica xerogels was significantly dependent on the annealing temperature
which was closely related to the amount of the defect in xerogel network. The emission intensity increased with the annealing temperature from 40 ℃ to 300 ℃ . But when the temperature exceeded 300 ℃
the intensity decreased with the annealing temperature. The study of the photoluminescence of co-doped xerogels showed that the intrinsic emissions due to
5
D
0
7
F
J
transitions of Eu
3+
were observed
and the intensity was sensitive to the surface states of CdS particles and of the porous silica gel.
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references
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