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《Journal of Synthetic Crystals》 2009-01
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Luminescence Spectrum and Crystallographic Structure of Eu~(3+) Doped in SrZn_2(PO_4)_2 Crystal

DING Hai-yan,HUANG Yan-lin,CAO Yong-gang(School of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China)  
The Eu3+ doped SrZn2(PO4)2 crystal were prepared by high temperature solid-state method.The crystal structure was investigated by X-ray powder diffraction(XRD),scanning electron-microscopy(SEM) and Fourier transform infrared spectra(FT-IR).The luminescence spectrum was investigated by the site-selective excitation and emission spectroscopy.The site-selective excitation spectra of 5D0→7F0 transition,5D0→7FJ(J = 1,2,3,4) emission,decay curve and luminescence lifetimes were investigated in SrZn2(PO4)2 sample.The 7F0 and 5D0 level of Eu3+ can not split in an inorganic host.The numbers corresponding to the transition of 7F0→5D0 can be assigned to the crystallographic sites for the Eu3+ in the host.The investigations confirmed that there is only one major crystallographic site in SrZn2(PO4)2 crystal,which can occupy the Sr2+ site with a higher symmetry environment.
【Fund】: 江苏省自然科学基金项目(BK-2007053)
【CateGory Index】: O734
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