%0 Journal Article
%T Upconversion luminescence of Tm3+/Yb3+codoped oxyfluoride glasses<br>Upconversion luminescence of Tm^3＋/Yb^3＋ codoped oxyfluoride glasses
%A Duan Zhong-Chao
%A Zhang Jun-Jie
%A He Dong-Bing
%A Dai Shi-Xun
%A Hu Li-Li
%A <br>段忠超
%A 张军杰
%A 何冬兵
%A 戴世勋
%A 胡丽丽
%J 中国物理 B
%D 2006
%I 
%X Novel oxyfluoride glasses are developed with the composition of 30SiO2,-15Al2,O3,-28PbF2,-22CdF2,-0.1TmF3,-xYbF3,-(4.9-x) AlF3,(x=0, 0.5, 1.0, 1.5, 2.0) in mol fraction. Furthermore, the upconversion luminescence characteristics under a 970nm excitation are investigated. Intense blue, red and near infrared luminescences peaked at 453nm, 476nm, 647nm and 789nm, which correspond to the transitions of Tm3,: 1,D2, \to 3F4,, 1G4 \to 3H6, 1G4 \to 3F4, and 3H4 \to 3H6, respectively, are observed. Due to the sensitization of Yb3+ ions, all the upconversion luminescence intensities are enhanced considerably with Yb3+ concentration increasing. The upconversion mechanisms are discussed based on the energy matching rule and quadratic dependence on excitation power. The results indicate that the dominant mechanism is the excited state absorption for those upconversion emissions.
%K upconversion luminescence
%K Tm3+/Yb3+ codoped
%K oxyfluoride glass<br>Tm^3＋/yb^3＋双掺杂
%K 氟氧化物玻璃
%K 发光特性
%K 激发功率
%K 半导体技术
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=42282571519DAA8F7501E572F01E6824&yid=37904DC365DD7266&vid=23CCDDCD68FFCC2F&iid=CA4FD0336C81A37A&sid=79D2EF35F60110C2&eid=D2742EEE6F4DF8FE&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=15