The Science & Technology
Cambridge - Monday 4th to
Wednesday 6th September 2017
article posted 21 June 2017
Yang Xia, was born in Guixi, China, has earned her master degree in Friedrich Schiller University in Jena, Germany. In 2013, she acquired her bachelor degree in
Harbin University of Science and Technology, China. Now she is working on optical glass material.
Cerium-Precipitation in Cerium Metaphosphate Glasses
Yang Xia*, Kristin Griebenow, Lothar Wondraczek
Otto Schott Institute of Materials Research
Friedrich-Schiller-Universitšt Jena, Jena, Germany
Rare earth ions are common dopants for glasses with fluorescent properties. Phosphate glasses show a high solubility for rare-earth ions and are usually easy to prepare.
In the past years, phosphate glasses obtained increasing attention also in commercial applications, e.g., as solid state laser medium, scintillators, superconductive materials, etc.
A glassy matrix with rare earth ions incorporated at a large modifier concentration (instead of a low dopant level) is usually utilized in optoelectronic devices. Here, we consider
the case of using cerium as the modifier species. The cerium ions (Ce3+
) are very sensitive to light and can provide energy transfer to other rare earth ions. Therefore,
cerium may act as sensitizer in luminescent glasses. Previous research on cerium(III) metaphosphate glasses focussed on the elastic properties, non-linear acoustic properties, thermal
expansion and magneto-optical properties. However, to the best of our knowledge, cerium(IV) metaphosphate glasses remain an open field of study. In this talk, we will present this type
of glass and provide information on cerium precipitation, glass structure and resulting optical properties.