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新型橙红色长余辉发光材料Gd₂O₂S:Sm³⁺的合成

Synthesis of the New Orange-red Long Afterglow Phosphor Gd₂O₂S:Sm³⁺

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【Author】 Song Chunyan+1, Wang Xiaohua+1, Liu Yingliang 1*, Shi Chunshan+2, Huang Langhuan+1, Zhang Jingxian+1, Lei Bingfu 1,2 (+1 Department of Chemistry,Jinan University,Guangzhou 510632; 2Key Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry, Chinese Academy of Sciences,Changchun 130022,China)

【机构】暨南大学化学系；中国科学院长春应用化学研究所稀土化学与物理国家重点实验室；暨南大学化学系广州510632；广州510632；长春130022；广州510632；长春130022；

【摘要】采用固相反应法合成了一种新型的橙红色长余辉磷光粉 Gd2 O2 S:Sm3 + ,并用全自动 X射线粉末衍射仪表征了其结构 ,用荧光光谱仪测试了其激发、发射光谱、余辉光谱和余辉衰减曲线。 XRD证实其为单相的硫氧化钆。该磷光体呈现 Sm3 +的三个特征发射 (4G5/2 → 6HJ,J=5 /2 ,7/2 ,9/2 )。经紫外或可见光激发后能观察到长时间明亮的余辉发光。更多还原

【Abstract】 The new Sm 3+ doped gadolinium oxysulfied phosphor,which has the orange-red long afterglow emission,was synthesized by solid-state reaction method.The synthesized phosphors were characterized by X-ray diffraction.The excitation and photoluminescence spectra,afterglow spectra and afterglow decay curve were examined by the fluorescence spectrometer.XRD confirmed the phosphor as pure phase Gd-2O-2S.The phosphors showed three typical transitions of Sm 3+( 4G 5/2→ 6H J,J=5/2,7/2, 9/2).A prominent phosphorescence can be seen in this phosphor after illuminated with UV light or visible light.更多还原