報告題目:稀土發光結合電子自旋共振研究籠中陰離子對發光中心局域環境的影響
報告人: 王笑軍 教授
單 位: 吉林大學物理學院
時 間:2015年12月18日 10:00
地 點:物理樓 333 會議室
主辦單位:吉林大學物理學院
摘要:Rare earth doped 12CaO.7Al(2)O(3) phosphors have been prepared and treated under different conditions to trap different anions in the nanocages of C12A7. The effects of the encaged anions on the optical spectroscopies of the RE doped C12A7 phosphors, including photoluminescence and color tuning, upconverted emissions, and cathodoluminescence, have been investigated. Electron paramagnetic resonance (EPR) spectra are also studied in combination with the optical spectra. Crystal field modification on local environment for RE activation centers by the encaged anions is observed by both photoluminescence and EPR that provide a combination studies and better probing on the effects of the encaged ions