光谱学与光谱分析 |
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Preparation and Photoluminescence Investigation of Europium-Doped Zinc Oxide Nanocrystalline |
SONG Guo-li,SUN Kai-xia, YANG You-tong |
Department of Physics, Harbin University, Harbin 150086, China |
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Abstract Europium-doped zinc oxide nanocrystalline was successfully prepared by sol-gel process. Photoluminescence spectrum (PL), Photoluminescence excitation spectrum(PLE), and X-ray diffraction pattern(XRD) of nanocrystalline ZnO∶Eu3+ with excitation wavelength 395 nm were measured at room temperature. The XRD pattern indicates that nanocrystalline ZnO∶Eu3+ has a hexagonal wurtzite structure and is polycrystalline. The mean grain size of nanocrystalline ZnO∶Eu3+ was calculated by Debye-Scherrer formula. The luminescence process of Eu3+-doped zinc oxide nanocrystalline was investigate using PL and PLE. Emission of 5D0→7F1(595 nm), 5D0→7F3(653 nm),5D0→7F2(611 nm) of Eu3+ ions, and a weak and wide visible band of ZnO were observed. Also, the photoluminescence of nanocrystalline ZnO∶Eu3+ exhibits a blue-shift. An energy transfer from excited states of ZnO hosts to doped Eu3+ ions centers was disclosed by the fact that that photoluminescence intensity maximum of nanocrystalline ZnO∶Eu3+ changs with the doping concentration of Eu3+.
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Received: 2006-01-18
Accepted: 2006-04-16
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Corresponding Authors:
SONG Guo-li
E-mail: S.gl@263.net
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Cite this article: |
SONG Guo-li,SUN Kai-xia,YANG You-tong. Preparation and Photoluminescence Investigation of Europium-Doped Zinc Oxide Nanocrystalline[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(04): 639-642.
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URL: |
https://www.gpxygpfx.com/EN/Y2007/V27/I04/639 |
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