|
|||||
|
|
Effect of crystal structure and ions concentration on luminescence in Yb and Tm codoped fluoride microcrystals |
|
| Authors: | Lili Wang Chunyan Cao Dan Zhao Kezhi Zheng Feng Shi Weiping Qin |
| Affiliation: | a State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China b School of Basic Sciences, Changchun University of Technology, Changchun 130012, China c College of Mathematics and Physics, Jinggangshan University, Jian 343009, China |
| Abstract: | A facile hydrothermal method is used for the preparation of Tm3+/Yb3+ codoped fluoride microphosphors. The effect of crystal structure and ions concentration on the spectra and lifetimes of the radiative levels of Tm3+ ions in the different fluoride microcrystals is studied in detail. XRD analysis of Tm3+/Yb3+ codoped LaF3 microcrystals shows that 20% Yb3+ doping is sufficient for hexagonal LaF3 microparticles to crystallize completely in the orthorhombic phase. And lifetime analysis suggests that the average lifetimes of the radiative levels of Tm3+ ions increased when the matrix phase structure changing from orthorhombic phase to hexagonal phase with ytterbium dopant concentration changing. |
| Keywords: | Upconversion Rare-earth Fluoride |
| 本文献已被 ScienceDirect 等数据库收录！ | |