Scintillator application of CsPbBr3 quantum dots-embedded SiO2 glasses

Abstract CsPbBr 3 quantum dots-embedded SiO 2 glasses were synthesized by the spark plasma sintering method as novel scintillators for γ -ray detectors. Their optical and scintillation properties were investigated to examine the scintillation performance. The X-ray diffraction patterns observed a halo peak of the SiO 2 glass phase and diffraction peaks of CsPbBr 3 . An emission peak due to CsPbBr 3 quantum dots was detected at around 515 nm in both photoluminescence (PL) and scintillation spectra. The PL and scintillation decay time curves included a component of nanosecond order, resulting from CsPbBr 3 quantum dots. Under γ -ray irradiation from 137 Cs, the light yield ( LY ) of the 0.2% CsPbBr 3 -embedded SiO 2 glass was 150 photons MeV −1 .