Chinese Optics Letters, 2013, 11 (6): 061604, Published Online: May. 31, 2013
Energy transfer in Ce, Nd, and Yb co-doped YAG phosphors Download: 632次
160.4670 Optical materials 160.4760 Optical properties 160.4890 Organic materials 160.5690 Rare-earth-doped materials
Abstract
YAG-Ce, Nd, and Yb phosphors with a triple-doped system are prepared by conventional solid-state reaction method. The fluorescence emission and excitation spectra are measured and analyzed. The influences of Yb3+ doping concentration on the emission of Yb3+ and Nd3+ in YAG-Ce, Nd, and Yb are studied. The fluorescence decay spectra, lifetime, and energy transfer efficiency of Ce3+ in different host materials of YAG-Ce and Yb, and YAG-Ce, Nd, and Yb are also compared. Furthermore, the trends of fluorescence decay spectra and the lifetimes of Nd3+ and Yb3+ in YAG-Ce, Nd, and Yb with the increase of Yb3+concentration are discussed. Results indicate that YAG-Ce, Nd, and Yb are good candidates for downconverting phosphor, with energy transfer efficiency reaching as high as 82.8%.
Lulu Wang, Changtai Xia, Peng Xu, Juqing Di, Qinglin Sai, Fei Mou. Energy transfer in Ce, Nd, and Yb co-doped YAG phosphors[J]. Chinese Optics Letters, 2013, 11(6): 061604.