Preparation and spectroscopic properties of LuAG:Tm and LuSAG: Tm
|Yikun Liao , Danyu Jiang , Yaming Ji , Jianlin Shi|
Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China
Tm-doped LuAG and LuSAG precursors were synthesized through a co-precipitation process, using ammonium hydrogen carbonate as precipitator. Single-phase cubic LuAG/Tm and LuSAG/Tm phosphors were obtained after calcinations at 1000oC and 1200oC, respectively. These powders could be easily sintered into corresponding transparent ceramic LuAG/Tm and LuSAG/Tm in H2 atmosphere at 1850oC. The PL excitation and emission spectra were recorded for both phosphors and ceramics. All emission spectra (λex = 355 nm) show blue emissions at 455 and 460 nm corresponding to the Tm3+ transitions 1D2→3F4 and 1G4→3H6.
Presentation: oral at E-MRS Fall Meeting 2005, Laser Ceramic Symposium, by Yikun Liao
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-18 02:29 Revised: 2009-06-07 00:44