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首页> 外文期刊>Physics of the solid state >Investigation of structural features of the Y_3Al_5O_(12): Ce~(3+)/Lu_2O_3 crystal phosphors formed by the colloidal chemical method
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Investigation of structural features of the Y_3Al_5O_(12): Ce~(3+)/Lu_2O_3 crystal phosphors formed by the colloidal chemical method

机译:胶体化学法制备Y_3Al_5O_(12):Ce〜(3 +)/ Lu_2O_3晶体荧光粉的结构特征研究

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摘要

The specific features of the crystal structure of crystal phosphors Y_3Al_5O_(12): Ce~(3+)/Lu_2O_3 (Lu_2O_3: Ce) synthesized by the colloidal chemical method have been investigated by neutron diffraction at room temperature. The influence of the method used for introducing Lu_2O_3 into the system on the structure and luminescence properties of the samples has been analyzed. The investigation has revealed that the spectra of the samples prepared under the most nonequilibrium conditions are characterized by the Stokes shift and high photoluminescence intensity. This has been explained by the disorder of their crystal structure due to the formation of stable associates of defects.
机译:通过胶体化学方法合成的荧光粉Y_3Al_5O_(12):Ce〜(3 +)/ Lu_2O_3(Lu_2O_3:Ce)的晶体结构的特定特征已在室温下通过中子衍射进行了研究。分析了将Lu_2O_3引入体系的方法对样品结构和发光性能的影响。研究表明,在最不平衡条件下制备的样品的光谱具有斯托克斯位移和高光致发光强度的特征。这是由于由于缺陷的稳定缔合体的形成而导致的晶体结构紊乱所解释的。

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