Luminescence properties of antimony modified germanate oxide glass doped with Eu3+, Er3+ and Dy3+ ions

*Renata Jadach1, Marcin Kochanowicz2, Jacek Zmojda2, Piotr Miluski2, Wojciech Pisarski3, Joanna Pisarska3, Maciej Sitarz1, Magdalena LeĊ›niak1, Dominik Dorosz1
1Faculty of Materials Science and Ceramics, AGH University of Science and Technology in Krakow, POLAND
2Faculty of Electrical Engineering, Bialystok University of Technology, POLAND
3Institute of Chemistry, University of Silesia, POLAND
e-mail: rjadach@agh.edu.pl

Keywords: gallo-germanate glasses, luminescence, structure, glass polymerization.

The glass material is promising host material for lanthanides ions and follow it an ideal candidate for optoelectronics material. However, host glass needs to meet certain criteria: suitable optical and thermal properties, relatively low phonon energy, good solubility of RE ions and proper mechanical properties. The silicates, phosphates, chalcogenides, fluorides, and germanates meet most of the requirements. In this investigation, gallo-germanate glass are of interest as they have a high solubility of RE ions, good thermal stability and relatively low phonon energy.
This study concerns investigation of glass modifiers impact on luminescent and structural properties of barium-gallo-germanate glasses. Studied glasses were modified with antimony ions on the way of barium oxide gradual replacement. Eu3+, Er3+ and Dy3+ ions were used as dopants to probe the local structure of surrounding environment.
The investigated glass system composition were as follow: GeO2-Ga2O3-(25-x)BaO-xSb2O3, where x=0, 5, 10, 15, 20, 25. Structural properties were studied with use of X-ray Diffraction measurements, Scanning Electron Microscope and FTIR spectra. Optical properties and the local environment of dopant were analyzed on the basis of emission spectra.

Acknowledgments:
The research activity was granted by the National Science Centre, Poland
No. 2016/23/B/ST8/00706.

Author: Renata Jadach
Conference: Title