Luminescent properties and applications of Tb3+ doped silicate glasses with industrial scales

Tb3+ doped X-ray conversion glassy screen with an industrial scale (50 mm × 50 mm × 12 mm) was successfully fabricated, and its luminescent properties and applications in CCD imaging system were investigated. Results showed that Tb3+ doped silicate glasses mainly emit weak blue (400–460 nm) and strong green (480–570 nm) fluorescence. With the increase of Tb3+ ion concentration, the intensity of green emission increases, but that of blue emission decreases. Gd3+ ions can sensitize the luminescence of Tb3+ ions among silicate glasses. With the increase of CeO2 concentration, the luminescent intensity of Tb3+ doped silicate glasses at 550 nm quickly decreases. However, the irradiation resistance of Tb3+ doped silicate glasses can be effectively improved by CeO2 addition. The imaging quality of the luminescent glass screen is more excellent than that of Gd2O2S polycrystalline screens.

Research Highlights
► The luminescent glass screen with an industrial scale was reported.
► The reported glass screen is more excellent than Gd2O2S polycrystalline ones.
► CeO2 addition can effectively improve the irradiation resistance of reported glasses.