The photoluminescence (PL) and radioluminescence (RL) of ZnO-precipitated CaO-B2O3-ZnO-Al2O3-K2O-SiO2(CaBZAKS) glass-ceramics were examined. Surface crystallization with a certain crystal orientation was observed after heat treatment. A broad emission was observed in both the CaBZAKS glass and the glass-ceramics. The PL decay curves of the glass-ceramics indicate that decay constants are increased by the crystallization of ZnO. Because the scintillation and scintillation decay spectra obtained by X-ray irradiation are independent of the heat treatment conditions, scintillation mainly depends on the host matrix, whose emission decays consist of at least three components. On the other hand, an optically stimulated luminescence (OSL) with a stimulation of 1.97 eV shows that the OSL intensity, whose emission energy is the same as that of scintillation, increases with heat treatment temperature.
ASJC Scopus subject areas
- Materials Science(all)