Investigation on preparation and spectroscopic properties of Yb2+-doped silica-based glass prepared by the oxyhydrogen flame fusing process

Highlight•The Yb2+-doped silica glass was prepared by using oxhydrogen flame fusing process.•The emission band around 505 nm was obtained under excited UV wavelength.•The wide full width at half maximum (FWHM) of emission band of 147nm was achieved.•This glass has applications for white light sources based on near UV LED chip.

In this paper, we report the preparation and spectroscopic properties of Yb2+-doped silica-based glass prepared by the solid state reaction using the oxyhydrogen flame fusing process. The glass exhibits broadband emission in the visible region due to a 5d–4f transition of the rare earth ions. The emission peak wavelength and bandwidth are especially 505 nm and 147 nm for Yb2+-doped silica-based glass at the room temperature. The color coordinate calculation shows that the Yb2+-doped silica-based glass has a better color coordinate (0.28, 0.37) in the white light region.