红色超敏LaAlO_(3)∶Eu^(3+)纳米荧光粉的X射线激发光谱及其CIE色度特性  

Properties of CIE chromaticity and X-ray excitation spectra of red hypersensitive LaAlO_(3)∶Eu^(3+)nanophosphors

作　　者：伏振兴 FU Zhenxing(College of Physics and Electronic Information Engineering,Ningxia Normal University,Guyuan Ningxia 756099;Engineering Technology Research Centre for Nano-tructures and Functional Materials,Ningxia Normal University,Guyuan Ningxia 756099)

机构地区：[1]宁夏师范学院物理与电子信息工程学院,宁夏固原756099 [2]宁夏师范学院纳米结构与功能材料研究工程技术中心,宁夏固原756099

出　　处：《宁夏师范学院学报》2024年第4期47-54,共8页Journal of Ningxia Normal University

基　　金：宁夏自然科学基金项目(2022AAC03337);宁夏科技创新团队项目(2021-20)。

摘　　要：采用溶液燃烧合成法制备新型红色超敏La AOl_(3)∶Eu^(3+)纳米荧光粉,合成的La AOl_(3)∶Eu^(3+)材料具备纯R3c(No.167)结构.采用光谱学方法,研究La AOl_(3)∶Eu^(3+)纳米荧光粉的X射线激发光谱性质.结果显示,在X射线激发下,La AOl_(3)∶Eu^(3+)纳米荧光粉发射出很强的红色荧光,谱带中心波长位于620nm处,发光的淬灭浓度是6.0mol%.CIE色度研究表明,样品具有优良的红色荧光发射特性且浓度效应对色调和色纯度影响较小.说明合成的荧光粉可作为高效闪烁体,在超紫外LEDs和辐射探测等领域有重要的应用价值.A new type of red hypersensitive LaAlO_(3)∶Eu^(3+)phosphor was synthesized using solution combustion synthesis method.The synthesized LaAlO_(3)∶Eu^(3+)material has a pure R3c(No.167)structure.The spectroscopic properties of LaAlO_(3)∶Eu^(3+)nanophosphors were investigated by using spectroscopic method.The results showed that the LaAlO_(3)∶Eu^(3+)nanophosphors emitted strong red-light luminescence under X-ray excitation,and that the central wavelength of the spectral band is at 620 nm.The quenching concentration of red-light luminescence is 6.0 mol%.The CIE chromaticity research indicated that the sample had excellent red fluorescence emission characteristics,and that the concentration effect had a relatively small impact on its color tone and purity.The properteis indicate that the synthesized fluorescent powder can serve as an efficient scintillator that has important application value in fields such as high-efficiency ultraviolet LEDs and radiation detection.

关 键 词：纳米荧光粉 LaAlO_(3)∶Eu^(3+) 溶液燃烧合成法 X射线激发发光 

分 类 号：O482.31[理学—固体物理]