Surface ligand-mediated phase and upconversion luminescence tuning of multifunctional NaGdF4: Yb/Er materials with paramagnetic and cathodoluminescent characteristics
Surface ligand-mediated phase and upconversion luminescence tuning of multifunctional NaGdF4: Yb/Er materials with paramagnetic and cathodoluminescent characteristics
复制标题
具有顺磁和阴极发光特性的多功能 NaGdF4: Yb/Er 材料的表面配体介导的相位和上转换发光调谐
DOI：
10.1016/j.optmat.2013.08.009
复制
发表时间：
2013-10
影响因子：
3.9
通讯作者：
Jianhua Hao
中科院分区：
文献类型：
--
作者：
Ming-Kiu Tsang;Songjun Zeng;Helen L.W. Chan;Jianhua Hao
采用低温溶剂热法合成了具有上转换发光（PL）、阴极发光（CL）和顺磁发光特性的NaGdF 4：18%Yb/2%Er荧光粉。以3-巯基丙酸（3 MPA）、聚乙二醇（PEG）和聚乙烯亚胺（PEI）为封端剂，对NaGdF 4：18%Yb/2%Er荧光粉的生长进行了研究。结果表明，一种新的同时控制晶相和UC发射颜色可以很容易地实现通过使用3 MPA，PEG和PEI表面改性。红色到绿色UC发射比从7.323（红色）调谐到0.857（绿色）。UC发射率的变化归因于表面配体的存在、结构和形态变化。此外，所合成的磷光体呈现额外的顺磁性行为，磁性质量磁化率为8.36 × 10−5emu/g Oe，峰值磁化强度为1.538 emu/g。此外，在低压电子束的照射下，检测到强烈的CL发射。该荧光粉具有可调谐的UC发光颜色、CL发射和顺磁特性，在照明、防伪标识系统和场发射显示器等方面具有很大的应用潜力。
NaGdF4:18%Yb/2%Er phosphors with tunable upconversion (UC) photoluminescence (PL), cathodoluminescence (CL) and paramagnetic properties are synthesized by a facile and low temperature solvothermal method. Organic compounds of 3-mercaptopropionic acid (3MPA), polyethylene glycol (PEG) and polyethylenimine (PEI) have been used as capping agents to coordinate the growth of NaGdF4:18%Yb/2%Er phosphors. The results reveal that a novel simultaneous control of crystal phases and UC emission colors can be readily realized by using 3MPA, PEG and PEI surface modifications. The red to green UC emission ratio is tuned from 7.323 (red) to 0.857 (green). The variation in the UC emission ratio is attributed to the presence of surface ligands, structural and morphological change. In addition, the as-synthesized phosphors present additional paramagnetic behavior with magnetic mass susceptibility of 8.36 × 10−5emu/g Oe and peak magnetization of 1.538 emu/g. Moreover, intense CL emission is detected under the irradiation of low voltage electron beam. Owing to the tunable UC luminescence colors, CL emission, and paramagnetic characteristics, the phosphors have high potential to be used in lightings, anti-fake labeling systems and field-emission displays.
登录
查看更多内容
影响因子：
16.6
作者：
Hao, Jianhua;Zhang, Yang;Wei, Xianhua
通讯作者：
Wei, Xianhua
稀土掺杂改变单分散多功能NaYbF4纳米晶的晶相、形状、尺寸、光磁性能
影响因子：
3.1
作者：
通讯作者：
--
影响因子：
3.6
作者：
Meng Jian-xin;Yang Chuang-tao;Chen Qing-qing
通讯作者：
Meng Jian-xin;Yang Chuang-tao;Chen Qing-qing
影响因子：
6.7
作者：
Boyer, John-Christopher;van Veggel, Frank C. J. M.
通讯作者：
van Veggel, Frank C. J. M.
影响因子：
4
作者：
Hao, JH;Gao, J;Cocivera, M
通讯作者：
Cocivera, M