Crystal growth and optical properties of a Ce2Si2O7 single crystal

Photoluminescence and scintillation properties of Ce-substituted Pr2Si2O7 crystal scintillators

“…The scintillation decay curves were considered to be due to the 5d-4f transitions of Ce 3+ and Pr 3+ . According to the past report about CePS, the decay time constant due to the emission of the 5d-4f transitions of Ce 3+ was 34 ns, 29) but in our case, the decay time constants were about 1-6 ns. The possible explanation would be that the emission of the 5d-4f transitions of Ce 3+ was quenched by the existence of Pr.…”

“…However, since it is difficult to distinguish emission from Ce 3+ and Pr 3+ , further research is needed to identify the decay time constants of Ce-substituted PrPS. According to a past report, the PL decay time constant of CePS due to emission from Ce 3+ was 13 ns, 29) but this time it was all about 0.1-4 ns. The possible reason is that emission from Ce 3+ was quenched by the existence of Pr since the decay time constants become shorter with the increase of Prconcentrations.…”

“…[25][26][27][28] However, scintillation of PrPS is quenched under X-ray irradiation, and there is room for improvement in characteristics by adding an emission center element. In recent, the scintillation properties of Ce 2 Si 2 O 7 (CePS) have also been reported, 29) and the scintillation light yield was 9400 ph MeV −1 with a fast decay time constant of 34 ns. This is an interesting discovery because materials with such a high content of Ce does not show a detectable emission, generally.…”