Time schedule by speaker > Ebrahim Hosseini Hossein

Optically active polycrystals, glasses and their combinations have applications in lighting, sensing and solar energy harvesting [1]. In particular, materials with ultraviolet (UV) photoluminescence (PL) and persistent luminescence (PersL) exhibit great potential. Yet, only a few UV PersL materials have been discovered so far [2].

Here, we report a new UV PersL poly-crystal by taking K4SrGe3O9 as a host and Bi3+ ions as emitters, which was synthesized in air using a conventional solid-state reaction technique. The structure, morphology and optical properties of Bi3+ doped K4SrGe3O9 were characterized. In parallel, the compound was melt-quenched into corresponding glasses for a comparison.

References

[1] Wondraczek, Lothar, et al. Advanced Science 2.12 (2015): 1500218.

[2] Xiong, Puxian, and Mingying Peng. Optical Materials: X 2 (2019): 100022.

Acknowledgments:

This work is a part of the dissemination activities of project ”FunGlass” (Centre for Functional and Surface Functionalized Glass). This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No.739566. The financial support by the Slovak Grant Agency, VEGA No. 1/0476/22 is gratefully acknowledged.