Effect of Li+ ions doping on structure and luminescence of (Y,Gd)BO3:Tb3

O6; The (Y,Gd)BO3:Tb3+ and Li+-doped (Y,Gd)BO3:Tb3+ phosphors were prepared by high temperature solid-state method.The inductively coupled plasma atomic emission spectrometry (ICP-AES),X-ray diffraction (XRD),scanning electron microscopy (SEM),and the excitation and emission spectra were used to cha...

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Published in:Journal of rare earths 2010-10, Vol.28 (5), p.701-704
Main Authors: XU, Huibing, ZHUANG, Weidong, WEN, Xiaofan, LIU, Ronghui, HU, Yunsheng, XIA, Tian
Format: Article
Language:English
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Summary:O6; The (Y,Gd)BO3:Tb3+ and Li+-doped (Y,Gd)BO3:Tb3+ phosphors were prepared by high temperature solid-state method.The inductively coupled plasma atomic emission spectrometry (ICP-AES),X-ray diffraction (XRD),scanning electron microscopy (SEM),and the excitation and emission spectra were used to characterize the samples.The results of ICP-AES and XRD indicated that Li+ ions could enter the (Y,Gd)BO3:Tb3+ lattice and induce the lattice expansion,it could be seen from SEM that the particles were spherical and non-aggregated when Li+-ions were doped into (Y,Gd)BO3:Tb3+ phosphor.With the incorporation of Li+ ions into (Y,Gd)BO3:Tb3+,the excitation intensity of (Y,Gd)BO3:Tb3+ was found to increase and,thus,the emission intensity of (Y,Gd)BO3:Tb3+ increases.The optimal Li+ doping concentration of ions was found to be 0.025 mol per formula unit,which was also found to induce concentration quenching due to the increase in Tb3+ content from 10 mol.% to 12 mol.%.
ISSN:1002-0721
DOI:10.1016/S1002-0721(09)60183-6