Luminescent properties of Eu3+ doped Gd2WO6 and Gd2（WO4）3 nanophosphors prepared via co-precipitation method
来源期刊：Journal of Rare Earths2011年第9期
论文作者：张庆 孟庆裕 田跃 冯晓辉 孙江亭 吕树臣
文章页码：815 - 821
摘 要：Eu3+ doped Gd2WO6 and Gd2（WO4）3 nanophosphors with different concentrations were prepared via a co-precipitation method. The structure and morphology of the nanocrystal samples were characterized by using X-ray diffraction （XRD） and field emission scanning electron microscopy （FE-SEM）, respectively. The emission spectra and excitation spectra of samples were measured. J-O parameters and quantum efficiencies of Eu3+ 5D0 energy level were calculated, and the concentration quenching of Eu3+ luminescence in different matrixes were studied. The results indicated that effective Eu3+:5D0-7F2 red luminescence could be achieved while excited by 395 nm near-UV light and 465 nm blue light in Gd2WO6 host, which was similar to the familiar Gd2（WO4）3:Eu. Therefore, the Gd2WO6:Eu red phosphors might have a potential application for white LED.
张庆，孟庆裕，田跃，冯晓辉，孙江亭，吕树臣
Heilongjiang Laboratory Low Dimensional Mesoscopic Physics, School of Physics and Electronic Engineering, Harbin Normal University
摘 要：Eu3+ doped Gd2WO6 and Gd2（WO4）3 nanophosphors with different concentrations were prepared via a co-precipitation method. The structure and morphology of the nanocrystal samples were characterized by using X-ray diffraction （XRD） and field emission scanning electron microscopy （FE-SEM）, respectively. The emission spectra and excitation spectra of samples were measured. J-O parameters and quantum efficiencies of Eu3+ 5D0 energy level were calculated, and the concentration quenching of Eu3+ luminescence in different matrixes were studied. The results indicated that effective Eu3+:5D0-7F2 red luminescence could be achieved while excited by 395 nm near-UV light and 465 nm blue light in Gd2WO6 host, which was similar to the familiar Gd2（WO4）3:Eu. Therefore, the Gd2WO6:Eu red phosphors might have a potential application for white LED.
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