Monodispersed LaF<SUB>3</SUB> nanocrystals: shape-controllable synthesis, excitation-power-dependent multi-color tuning and intense near-infrared upconversion emission
作者: Ling RaoWei LuGuozhong RenHaibo WangZhigao YiHongrong LiuSongjun Zeng
作者单位: 1College of Physics and Information Science and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, Hunan, People’s Republic of China
2Faculty of Materials, Optoelectronics and Physics, Key Laboratory of Low-dimensional Materials and Application Technology (Ministry of Education), Xiangtan University, Xiangtan 411105, People’s Republic of China
3Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hong Kong, People’s Republic of China
刊名: Nanotechnology, 2014, Vol.25 (6)
来源数据库: Institute of Physics Journal
DOI: 10.1088/0957-4484/25/6/065703
原始语种摘要: In this study, monodispersed and high-quality hexagonal phase LaF3 nanocrystals with different shapes and sizes were synthesized by a solvothermal method using oleic acid as the stabilizing agent. The as-prepared LaF3 nanocrystals were characterized by transmission electron microscopy (TEM), x-ray diffraction (XRD), and analysis of the upconversion spectra. The TEM results reveal that the samples present high uniformity and monodispersity and are self-assembled into a two-dimensional ordered array. Moreover, the shape, size and structure of the nanocrystals can be readily tuned by adjusting the NaF content. With increasing content of NaF, the shape of the LaF3 nanocrystals changed from particle to rod and the size gradually increased. More importantly,...
全文获取路径: IOP 
影响因子:3.842 (2012)

  • upconversion 增频变频
  • SUB substitute
  • controllable 可控制的
  • shape 形状
  • hexagonal 六角形的
  • monodispersity 单分散性
  • excitation 激发
  • tuning 
  • diffraction 衍射
  • ordered 有序的