Luminescent tin-doped phosphate glasses activated by carbon
This paper reports on the use of carbon powder together with tin(IV) oxide to produce rare earth-free blue-emitting phosphate glasses by melting in ambient atmosphere. While the as-prepared SnO2-doped glass was lacking in luminescent features, increasing amounts of graphite added to batch materials lead to developing the blue-emitting character of the glasses under excitation in the ultraviolet (UV). Upon addition of the highest amount of graphite at 2.0 wt%, the luminescence of carbon-induced defects became noticeable. Time-resolved UV-excited emission spectra appeared consistent with the different contributors to the exhibited luminescence being the twofold-coordinated tin centers alongside carbon-induced defects.
Materials Research Bulletin
Digital Object Identifier (DOI)
Jimenez. (2017). Luminescent tin-doped phosphate glasses activated by carbon. Materials Research Bulletin, 88, 131–135. https://doi.org/10.1016/j.materresbull.2016.12.031