Photostimulated luminescence in Ce 3+-doped silicate glasses

Abstract

The first observation of photostimulated luminescence phenomenon in a Ce 3+-doped silicate glass is reported. When the X-ray irradiated glass was excited by a He–Ne laser (633 nm), photostimulated luminescence at 400 nm due to the 4f–5d transition of Ce 3+ ions was observed. The photostimulated excitation spectrum showed a broad band with a maximum at 600 nm. By comparing with the investigations on photostimulable luminescence phosphor BaFBr:Eu 2+, the luminescence appears to result from photostimulated recombination of electrons and holes at traps which leave electrons in a long-lived excited state.