Upconversion emission of SrYbF_5:Er^(3+) nanosheets modified by Tm^(3+) ions  

作　　者：刘晴 颜晓红 陈远 王祥夫 

机构地区：[1]College of Science, Nanjing University of Aeronautics and Astronautics [2]School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications

出　　处：《Journal of Rare Earths》2013年第11期1053-1058,共6页稀土学报（英文版）

基　　金：supported by National Natural Science Foundation of China(51032002);Key Project of the National High Technology Research and Development Program("863" Program)of China(2011AA050526);Science and Technology Support Plan of Jiangsu Province(BE2011191);Funding of Jiangsu Innovation Program for Graduate Education(CXZZ13_0143)

摘　　要：Through a hydrothermal route, the Er3＋and Tm3＋co-doped SrYbF5 nanosheets were synthesized. The resulting samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and luminescence spec-tra. Under the excitation of 980 nm laser irradiation, the upconversion emissions of Tm3＋ions centered at 474 nm （1G4→3H6）, 679 nm （3F2→3H6）, 699 nm （3F3→3H6）, 803 nm （3H4→3H6） and emissions of Er3＋ions centered at 522 nm （2H11/2→4I15/2）, 543 nm （4S3/2→4I15/2）, 654 nm （4F9/2→4I15/2） were observed. The upconversion emissions of Er3＋ions were adjusted by the concentration of Tm3＋ions. The energy transfer mechanisms among Er3＋-Yb3＋-Tm3＋in SrYbF5 nanosheets were discussed.Through a hydrothermal route, the Er3＋and Tm3＋co-doped SrYbF5 nanosheets were synthesized. The resulting samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and luminescence spec-tra. Under the excitation of 980 nm laser irradiation, the upconversion emissions of Tm3＋ions centered at 474 nm （1G4→3H6）, 679 nm （3F2→3H6）, 699 nm （3F3→3H6）, 803 nm （3H4→3H6） and emissions of Er3＋ions centered at 522 nm （2H11/2→4I15/2）, 543 nm （4S3/2→4I15/2）, 654 nm （4F9/2→4I15/2） were observed. The upconversion emissions of Er3＋ions were adjusted by the concentration of Tm3＋ions. The energy transfer mechanisms among Er3＋-Yb3＋-Tm3＋in SrYbF5 nanosheets were discussed.

关 键 词：NANOSHEETS UPCONVERSION LUMINESCENCE Er3＋ Tm3＋ rare earths 

分 类 号：TB383.1[一般工业技术—材料科学与工程]