tailieunhanh - Effect of temperature, doping concentration on optical properties of ZnO nanoparticles and Er3+ ions co- doped silica
In this work, we report our recent development of sol- gel and spin- coating methods to prepare thin films ZnO- SiO2 : Er3+. The characteristic PL spectra Er3+ ions are presented. The effect of temperature, doping concentration on the optical properties of the materials are annalyzed and discussed. The efficient energy transfer from ZnO nanoparticles to Er3+ ions involves to efficient PL emission is also observed. |
đang nạp các trang xem trước