| 光谱学与光谱分析 |
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| Crystal Structure and Photoluminescence Studies of ZnO Nanocrystals Doped with Eu3+ Ions |
| HUANG Fang-ying, LUO Li*, DAI Qiang-qin |
| School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China |
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Abstract The ZnO∶Eu3+ crystal was prepared via coprecipitation with the starting materials Zn(OOCCH3)2·2H2O, Eu2O3 and NaOH. The X-ray diffraction patterns show that the samples are hexagonal wurtzite structure, No diffraction peaks from europium oxides are detectable. Comparing the ZnO and ZnO∶Eu3+ Raman spectra, the new local vibrational modes were observed in ZnO∶Eu3+. These phenomena show that Eu3+ ions have entered the lattice by doping. The SEM analysis exhibits that ZnO nanoparticles prepared by coprecipitation become smaller with Eu3+ doping. The excitation and emission spectra of ZnO∶Eu3+ sample present a efficient energy transfer process between ZnO and Eu3+ ions.
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Received: 2011-02-28
Accepted: 2011-07-10
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Corresponding Authors:
LUO Li
E-mail: luoli@gdut.edu.cn
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