JIANG Qing-yun, LI Chen-xia, YE Ren-guang, CHEN Hong, HUA You-jie, DENG De-gang, ZHAO Shi-long, XU Shi-qing. Luminescence and Energy Transfer of Ce<sup>3+</sup>/Sm<sup>3+</sup> Co-doped Glass and Glass Ceramics Containing Zn<sub>2</sub>SiO<sub>4</sub> Nanocrystals for White LEDs[J]. Chinese Journal of Luminescence, 2012,33(4): 371-376
JIANG Qing-yun, LI Chen-xia, YE Ren-guang, CHEN Hong, HUA You-jie, DENG De-gang, ZHAO Shi-long, XU Shi-qing. Luminescence and Energy Transfer of Ce<sup>3+</sup>/Sm<sup>3+</sup> Co-doped Glass and Glass Ceramics Containing Zn<sub>2</sub>SiO<sub>4</sub> Nanocrystals for White LEDs[J]. Chinese Journal of Luminescence, 2012,33(4): 371-376 DOI: 10.3788/fgxb20123304.0371.
co-doped glass ceramics were prepared by high temperature melting
and their luminescence properties were studied. In the glass ceramics
Ce
3+
ions have shown efficient broadband blue emission due to the 4f-5d transition
and Sm
3+
ions have shown bright orange-red luminescence resulting from the
4
G
5/2
6
H
J
(
J
=5/2
7/2
9/2
11/2) transitions. By adjusting the doped concentration of Ce
3+
and Sm
3+
ions
the chroma of the samples varied gradually. When the mole fraction of CeO
2
and Sm
2
O
3
was 1:1
the white light luminescence glass ceramic with the chromaticity coordinate (0.315
0.296) was prepared. The energy transfer from Ce
3+
to Sm
3+
ions were investigated by spectra properties and fluorescence decay curves
energy transfer efficiency is about 20% in the SAZKNGC
0.6
S
0.6
glass ceramics. The results indicate that Ce
3+
/Sm
3+
co-doped glass ceramics containing -Zn
2
SiO
4
are potential matrix materials for white LEDs.
关键词
Ce3+/Sm3+离子发光能量传递微晶玻璃白光LED
Keywords
Ce3+/Sm3+ ionsluminescenceenergy transferglass ceramicswhite LED
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