Time-resolved luminescence and excitation spectroscopy of Co-doped Gd₃Ga₃Al₂O₁₂ scintillating crystals.

ABSTRACT: Cerium doped Gd₃Ga₃Al₂O₁₂ (GGAG) single crystals as well as GGAG:Ce single crystals co-doped by divalent (Mg²⁺, Ca²⁺) and tetravalent (Zr⁴⁺, Ti⁴⁺) ions have been studied by means of time-resolved luminescence as well as the excitation luminescence spectroscopy in vacuum ultraviolet (VUV) and soft X-ray (XUV) spectral range. Tunable laser excitation was applied for time-resolved experiments in order to obtain luminescence decay curves under excitations in Ce³⁺, Gd³⁺ and excitonic absorption bands. The influence of the co-dopant ions on the Ce³⁺ luminescence decay kinetics is elucidated. The fastest luminescence decay was observed for the Mg²⁺ co-doped crystals

SUBMITTER: Pankratova V 

PROVIDER: S-EPMC7684308 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature