ZnO∶Eu<SUP>3+</SUP>纳米晶的制备及发光性质研究

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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⁺.

Key words：ZnO∶Eu³⁺ nanocrystalline;Sol-gel process;Photoluminescence

Received: 2006-01-18 Accepted: 2006-04-16

ZTFLH:

O484

Corresponding Authors: SONG Guo-li E-mail: S.gl@263.net

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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https://www.gpxygpfx.com/EN/Y2007/V27/I04/639

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