Photoluminescent properties of Eu3+ and Tb3+ codoped Gd2O3 nanowires and bulk materials
来源期刊：JOURNAL OF RARE EARTHS2013年第11期
论文作者：李富海 刘海 魏水林 孙伟 于立新
文章页码：1063 - 1068
摘 要：In this paper,the Gd2O3:Eu3+,Tb3+phosphors with different doping concentrations of Eu3+and Tb3+ions were prepared by a hydrothermal method for nanocrystals and the solid-phase method for microcrystals.The interaction of the doped ions with different concentrations and the luminescent properties of the nanocrystals and microcrystals were studied systematically.Their structure and morphology of Gd2O3:Eu3+,Tb3+phosphors were analyzed by means of X-ray powder diffraction（XRD）,transmission electron microscopy（TEM）and scanning electron microscopy（SEM）.The photoluminescence（PL）properties of Gd2O3:Eu3+,Tb3+phosphors were also systematically investigated.The results indicated that when the concentration of doped Eu3+was fixed at 1 mol.%,the emission intensity of Eu3+ions was degenerating with Tb3+content increasing,while when the Tb3+content was fixed at 1 mol.%,the emission intensity of Tb3+ions reached a maximum when the concentration of Eu3+was 2 mol.%,implying that the energy transfer from Eu3+to Tb3+took place.In addition,Tb3+could inspire blue-green light and the Eu3+could inspire red light.Therefore co-doping systems by controlling the doping concentration and the hosts are the potential white emission materials.
李富海，刘海，魏水林，孙伟，于立新
Department of Materials Science and Engineering, Nanchang University
摘 要：In this paper,the Gd2O3:Eu3+,Tb3+phosphors with different doping concentrations of Eu3+and Tb3+ions were prepared by a hydrothermal method for nanocrystals and the solid-phase method for microcrystals.The interaction of the doped ions with different concentrations and the luminescent properties of the nanocrystals and microcrystals were studied systematically.Their structure and morphology of Gd2O3:Eu3+,Tb3+phosphors were analyzed by means of X-ray powder diffraction（XRD）,transmission electron microscopy（TEM）and scanning electron microscopy（SEM）.The photoluminescence（PL）properties of Gd2O3:Eu3+,Tb3+phosphors were also systematically investigated.The results indicated that when the concentration of doped Eu3+was fixed at 1 mol.%,the emission intensity of Eu3+ions was degenerating with Tb3+content increasing,while when the Tb3+content was fixed at 1 mol.%,the emission intensity of Tb3+ions reached a maximum when the concentration of Eu3+was 2 mol.%,implying that the energy transfer from Eu3+to Tb3+took place.In addition,Tb3+could inspire blue-green light and the Eu3+could inspire red light.Therefore co-doping systems by controlling the doping concentration and the hosts are the potential white emission materials.
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