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| 1 | Lu2Si2O7∶Ce纳米晶的溶胶-凝胶法合成和闪烁性能显示文摘采用溶胶-凝胶法制备了Lu2Si2O7∶Ce纳米晶,利用X射线衍射(XRD)、扫描电镜(SEM)、荧光光谱仪、X射线激发发射谱仪对制备的Lu2Si2O7∶Ce纳米晶的晶相结构、微观形貌和光学性能进行了表征。结果表明,溶胶-凝胶法制备的Lu2Si2O7∶Ce前驱体在煅烧温度为1000℃时开始晶化,晶粒尺寸随着煅烧温度的升高而变大,1200℃煅烧2 h后的晶体颗粒均匀,分散性最优,平均晶粒尺寸约为28.9 nm,呈近球形;Lu2Si2O7∶Ce纳米晶的紫外吸收谱存在峰位分别为304 nm和350 nm两个吸收峰,源自于Ce^3+离子的4f→5d跃迁;光致发射谱和X射线激发发射谱都表现为典型的非对称双峰结构,归属于Ce^3+离子的5d^1→2F5/2和5d^1→2F7/2跃迁,Ce^3+离子的最佳掺杂浓度约为1%;荧光衰减时间约为37.2 ns,可满足高时间分辨X射线探测需要。 | 李乾利 胡亚华 马玉彬 黄世明 顾牡 张志军 赵景泰 | 2020 | 发光学报2020，41，4： | 1 |
| 2 | CaGd_3F_(11):Eu^(3+)超小纳米晶的制备及其发光性质研究显示文摘以无水氯化钙、稀土硝酸盐、正辛醇为原料,以正辛胺和油酸为表面活性剂,通过控制不同的反应条件,采用溶剂热法制备出形貌均匀的CaGd_3F_(11):Eu^(3+)纳米发光材料.用X射线衍射(XRD)、透射电子显微镜(TEM)和荧光分光光度计对合成的纳米晶的粒径、形貌和光学性质进行了表征.结果表明CaGd3F11纳米晶的结晶度良好且尺寸均匀(约5nm),其作为基质材料,掺杂Eu3+表现出很强的荧光发射. | 田婧 罗华锋 王强 | 2018 | 四川大学学报(自然科学版)2018，55，2： | 0 |
| 3 | Controlling synthesis and host sensitized Eu^(3+) emissions of K_5Gd_9F_(32) and GdF_3显示文摘By controlling the reactant ratios, hydrothermal time, hydrothermal temperatures, p H values of the prepared solutions, and the concentrations of K3C6H5O7·2H2O, 1 mol% Eu3+ doped cubic phase of K5Gd9F32 and/or orthorhombic phase of Gd F3 micro/nanocrystals have been synthesized based on a hydrothermal method. For comparison, the sample was also synthesized by a co-precipitation method. The samples were characterized by X-ray diffraction(XRD) patterns, field emission scanning electron microscopy(FE-SEM) images, energy-dispersive spectroscopy(EDS) spectra, and photoluminescence(PL) excitation and emission spectra. By host Gd3+ sensitizing, the Eu3+ presents relatively strong emissions. The energy transfers from host Gd3+ to doping Eu3+ are observed in all the samples and the energy transfer plays an important role in the emission of Eu3+. Acting as a probe, the Eu3+ presents its distinct optical properties in the samples. | XIE An CAO ChunYan CAO RenPing NOH HyeonMi JEONG JungHyun | 2015 | Science China(Technological Sciences)2015，58，5： | 0 |
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