Work

Scintillation properties of Er2O3-doped La2O3–TiO2–TeO2 glass and glass ceramics

Year: 2025

Type: article

Abstract: 0.5Er 2 O 3 –10La 2 O 3 –10TiO 2 –79.5TeO 2 (ErLTT) glass and glass ceramics were prepared envisioning near-infrared (NIR) scintillators. The glass ceramics were synthesized by thermal processing of the ErLTT glass at 480 °C (ErLTT480) or 490 °C (ErLTT490) for 24 h. Several photoluminescence and scintillation peaks were ascribed to the 4f→4f transitions of Er 3+ . The photoluminescence quantum yield was improved by thermal processing of the glass and the formation of the crystalline phase, with the highest quantum yield being observed from ErLTT490. Scintillation enhancement was discussed in terms of the charge carrier transport and the quantum yield of the luminescence center. Moreover, ErLTT490 showed the most intense scintillation intensity, and its lowest measurable dose rate recorded with a lnGaAs photodiode was about 10 mGy/h, similar to that of an Er 3+ -doped Bi 4 Ge 3 O 12 single crystal.

Source: Ceramics International

DOI: 10.1016/j.ceramint.2025.12.133