Controllable synthesis and size-dependent upconversion luminescence properties of Lu2O3:Yb3+/Er3+ nanospheres
Controllable synthesis and size-dependent upconversion luminescence properties of Lu2O3:Yb3+/Er3+ nanospheres
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Lu2O3:Yb3 /Er3 纳米球的可控合成和尺寸依赖性上转换发光特性
DOI：
10.1039/c4ce00036f
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发表时间：
2014-04
期刊：
影响因子：
3.1
通讯作者：
Qin, Weiping
中科院分区：
文献类型：
--
作者：
Song, Weiye;Lv, Changjian;Liu, Zhenyu;Qin, Weiping
通过软化学共沉淀法合成了具有不同尺寸和形状（纳米聚集体、亚微米线和纳米球）的Lu₂O₃:Yb³⁺/Er³⁺纳米晶体。通过调节稀土与尿素沉淀剂的反应物比例（[RE³⁺]）
Lu2O3:Yb3+/Er3+ nanocrystals with various sizes and shapes (nano-aggregates, sub-micrometer wires, and nanospheres) have been synthesized by the soft chemistry coprecipitation route. By regulating the reactant ratio of rare earth to urea precipitant ([RE3+]/(NH2)2CO), uniform spherical Lu2O3:Yb3+/Er3+ nanoparticles with the sizes of 45, 100, 165, 200, and 250 nm were obtained in the experiments. The phases, morphologies, as well as the luminescence properties of as-prepared samples were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), and upconversion luminescence (UCL) spectra, respectively. Under the excitation of a 980 nm diode laser, the Lu2O3:Yb3+/Er3+ samples showed size-dependent upconversion luminescence property. From the results of Fourier transform infrared (FTIR) spectra and dynamical analysis, it was confirmed that the surface effect is dominant in influencing the UCL of Er3+ in the spherical Lu2O3:Yb3+/Er3+ samples. By coating Lu2O3:Yb3+/Er3+ nanospheres with different shell layers, UCLs of Er3+ were changed greatly in these core–shell samples. The possible physical mechanism involved in size/surface-dependent upconversion processes was discussed in detail.
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影响因子：
3.9
作者：
F. Jing;K. Shimamura;E. Vı́llora;A. Medvedev;K. Kitamura;K. Asai;A. Sato
通讯作者：
F. Jing;K. Shimamura;E. Vı́llora;A. Medvedev;K. Kitamura;K. Asai;A. Sato
一维 Lu2O3:Eu3 荧光粉的简易无表面活性剂和模板合成及其发光性能
影响因子：
3.7
作者：
Jia, Guang;Zheng, Yuhua;Zhang, Hongjie
通讯作者：
Zhang, Hongjie
影响因子：
3.7
作者：
Ghosh, Pushpal;Oliva, Jorge;Patra, Arnitava
通讯作者：
Patra, Arnitava
影响因子：
3.3
作者：
E. Zych;D. Hreniak;W. Stręk
通讯作者：
E. Zych;D. Hreniak;W. Stręk
影响因子：
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作者：
Jun Yang;Cuimiao Zhang;Chong Peng;Chunxia Li;Lili Wang;Ruitao Chai;Jun Lin
通讯作者：
Jun Yang;Cuimiao Zhang;Chong Peng;Chunxia Li;Lili Wang;Ruitao Chai;Jun Lin