Preparation and up-conversion fluorescence of rare earth (Er or Yb/Er)-doped TiO2 nanobelts |
| |
| Authors: | Tianhao Ji Yang Liu Haiyan Du Guanglu Ge |
| |
| Institution: | a College of Chemical and Environmental Engineering, Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
b National Center for Nanoscience and Technology, Beijing 100190, China |
| |
| Abstract: | Anatase TiO2 nanobelts doped with rare earth (RE) ions Yb3+, Er3+ or Yb3+/Er3+ have been prepared using layered titanate nanobelts (LTO NBs) with RE ions as the precursor obtained by ion-exchange between LTO NBs and RE ions under hydrothermal process. Various measurement results demonstrate that the RE ions have doped into the lattice of TiO2, and the Er3+ or Yb3+/Er3+ doped nanobelts show strong visible up-conversion (UC) fluorescence under 980 nm excitation. The UC emission intensity of LTO NBs embedded with Er3+ or Yb3+/Er3+ is slightly higher than that of the corresponding TiO2 nanobelts doped with RE ions, whereas higher RE doping content leads to the decrease of UC emission intensity due to the concentration-quenching effect. |
| |
| Keywords: | TiO2 nanobelts Rare earth doping Hydrothermal Up-conversion |
| 本文献已被 ScienceDirect 等数据库收录！ |
