Research status of fluorescent materials
1. Doping modification: Other ions are added to the traditional fluorescent materials to increase the conversion efficiency and enhance the fluorescence intensity. For example, add the sensitized Yb3+ ions to the fluorescent material. Yb3+ ion has a strong absorption cross section near 980nm, and only has two energy levels, so it will not lose the excitation light energy due to the up-conversion process. Therefore, it is an ideal sensitizer. In particular, lithium ions enhance the fluorescence of rare earth...