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.