Influence of concentration and sintering temperature on luminescence properties of Eu^(3+):SnO_2 nanocrystallites

查看全文 作　　者：P. [1]Psuja;W. [1]Strek

机构地区：[1]Institute of Low Temperature and Structure Research of Polish Academy of Sciences

出　　处：《Journal of Rare Earths》索引2012年第30卷第7期,共5页

基　　金：Project supported by Polish Ministry of Science and Higher Education (N507 076 32/2186, RO 02 015 02 and N507 421236) 摘　　要：The nanopowders of SnO2 doped with different Eu3+ concentrations were synthesized using the modified Pechini method. The Eu3+ concentrations were high above solubility limit. The average size of crystallites was controlled by the sintering temperatures. The structure and the morphology of obtained powders were examined using the XRD (X-ray diffraction) and TEM (transmission electron microscopy) analyses. The Eu2Sn2O7 phase separation was observed at relatively high concentration of Eu3+ ions. The ZnS:Ag micropowders were mixed with the Eu3+:SnO2 powders and their normalized emission was used to measure a relative efficiency of Eu3+:SnO2. The photoluminescence spectra of mixed powders were measured in function of Eu3+ concentration and average size of nanocrystallites. The reference peak method was used for comparison of intensities of the samples and selection of optimal one. The influence of the average grain size and Eu3+ concen-tration on the phosphor's efficiency was discussed. The presented results confirmed the rightness of synthesis of the Eu3+:SnO2 in form of nanocrystalites with relatively high Eu3+ concentration. 关键词：二氧化锡烧结温度纳米晶浓度 EU 发光性能平均晶粒尺寸 Pechini法

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Influence of concentration and sintering temperature on luminescence properties of Eu^(3+):SnO_2 nanocrystallites

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