| Popis: |
By introducing Ag nanocrystallites into rare earth ions doped tellurite glass,the fluorescence intensity were enhanced through surface plasmon resonance(SPR),and the up-conversion luminous efficiency were improved obviously.The influence of Ag nanocrystallites on Tm3+/Yb3+ co-doped tellurate glass was studied,and the up-conversion luminescence mechanism was also discussed.The results show that Ag nanocrystallites with the size from 5 to 8 nm were gained by heat treatment under 330 ℃ for 30 min.After introducing Ag nanocrystallites,the three-photon absorption of blue-red transition in glass turn to two-photon absorption.Because of the enhanced local field surface plasmon resonance and the energy transfer between Ag and Tm3+,the fluorescence intensity of Ag-contained glass is 5 times more than glass without Ag nanocrystallites. |
