Gd_2O_3:Yb^(3+),Nd^(3+),Tm^(3+)/SiO_2/Ag纳米复合材料的合成及上转换发光性质  

Preparation and Upconversion Luminesecent Performance of Gd_2O_3:Yb^(3+),Nd^(3+),Tm^(3+)/SiO_2/Ag Nanocomposite

作　　者：葛文 杨培志[1] 申兰先[1] 邓书康[1] GE Wen;YANG Pei-Zhi;SHEN Lan-Xian;DENG Shu-Kang(Department of Energy and Environmental Science,Key Laboratory of Advanced Technique&Preparation for Renewable Energy Materials,Ministry of Education,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学能源与环境科学学院,可再生能源材料先进技术与制备教育部重点实验室,昆明650500

出　　处：《无机化学学报》2018年第4期697-702,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21701140)和云南师范大学博士启动基金(No.2016zb001)项目资助

摘　　要：通过多步骤的化学法合成了Gd_2O_3:Yb^(3+),Nd^(3+),Tm^(3+)/SiO_2/Ag纳米复合材料。利用XRD,TEM,EDS,XPS,CLSM等方法对样品进行表征。实验结果表明,具有低声子能、稳定的化学性质的Gd2O3作为上转换发光的基质,当掺杂的敏化剂Nd3+离子浓度为1.0%(n/n),激活剂离子Tm3+浓度为0.5%(n/n)时,上转换发光强度达到最大值。此外,表面吸附的Ag纳米颗粒,由于表面等离激元共振耦合作用,使得上转换发光蓝光波段的强度增强1.70倍。The Gd2〇3:Yb3+,Nd3+,Tm3+/Si〇2/Ag nanocomposite was synthesized b_multi-step chemical methods.XRD,TEM,EDS,XPS and CLSM were used to characterize the prepared samples.The results indicate that the upconversion intensity reach to maximum when the doping concentration of Nd3+and Tm3+ions reach to 1.0%and 0.5%(n/n)in Gd2〇3 matrix with low phonon energy and good chemistry stability,respectively.Moreover,the blue region intensity is enhanced 1.70 times obviously due to the surface plasmon resonance effect by absorbed Ag nanoparticles.

关 键 词：复合纳米材料 上转换 等离激元 

分 类 号：O611.6[理学—无机化学]