Charge Transfer and Charge Trapping Processes in Ca- or Al-Co-doped Lu₂SiO₅ and Lu₂Si₂O₇ Scintillators Activated by Pr³⁺ or Ce³⁺ Ions.

ABSTRACT: Lutetium oxyorthosilicate Lu₂SiO₅ (LSO) and pyrosilicate Lu₂Si₂O₇ (LPS) activated by Ce³⁺ or Pr³⁺ are known to be effective and fast scintillation materials for the detection of X-rays and γ-rays. Their performances can be further improved by co-doping with aliovalent ions. Herein, we investigate the Ce³⁺(Pr³⁺) → Ce⁴⁺(Pr⁴⁺) conversion and the formation of lattice defects stimulated by co-doping with Ca²⁺ and Al³⁺ in LSO and LPS powders prepared by the solid-state reaction process. The materials were studied by electron paramagnetic resonance (EPR), radioluminescence spectroscopy, and thermally stimulated luminescence (TSL), and scintillation decays

SUBMITTER: Laguta V 

PROVIDER: S-EPMC10302549 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature