%0 Journal Article
%T Preparation and MIR Luminescence Properties of Er3+ Doped Fluorochloride Glass
%J -
%D 2018
%X The Er3+ doped fluorochloride glass sample was prepared by incorporating Cl- into the fluoride glass (ZBLAN) using a conventional melt quenching method. The chemical stability, thermal stability and fluorescent properties of the Er3+ doped fluorochloride glass were reasearched by increasing the Cl- concentration. The effect of different Cl- concentrations on the luminescent properties of the fluorochloride glass was compared. The results show that the luminescent intensity of infrared increases with the increase of Cl- concentration. When the Cl- concentration reaches 15 mol%, the luminescent intensity is the strongest. At the same time, the effects of different Er3+ concentrations on the luminescence properties of fluorochloride glass were compared. The optimum doping concentration of Er3+ was 1 mol%. Hence, it is represented here as ZBLAN:15Cl, 1Er. The X-ray diffraction (XRD), absorption spectrum, near-infrared spectrum (NIR) and mid-infrared spectrum (MIR) of Er3+ doped fluorochloride glass were analyzed by experiments. The energy level diagram of Er3+ and the infrared luminescence of the sample were analyzed. The infrared luminescence of Er3+ at the excitation of 980 nm was mainly studied. The Judd-Ofelt parameters were calculated. It was found that the value of ¦¸2 increased first and then decreased to the Cl- contents increasing in the glass matrix, while ¦¸4 and ¦¸6 did not change obviously in different glass composition. This is because the environment of the crystal field around the rare earth ions has changed. In the Er3+-doped fluoride glass, the introduction to Cl- significantly enhances the mid-infrared luminescent intensity of the fluorochloride glass. The calculation of J-O theoretical parameters shows that the introduction to Cl- enhances the covalentity of the coordination bond with Er3+, reduces the local symmetry, and significantly enhances the luminescent intensity of fluoride glass. Rare earth ion doped fluorochloride glass provides a theoretical basis of improving luminescent properties. At the same time, it has important guiding significance of the research, development and application of similar MIR luminescent materials
%K Er3+ Doped
%K Fluorochloride Glass
%K MIR Luminescence
%U http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=610&doi=10.11648/j.ijpp.20180201.17