Scintillation properties of flexible scintillator composed on polydimethylsiloxane integrated with Lu2GdAl3Ga2O12:Pr2O3 phosphors

This study explored the luminescence properties and sensitivity of a flexible scintillator composed on polydimethylsiloxane integrated with Lu 2 GdAl 3 Ga 2 O 12 doped with 1 mol% Pr 2 O 3 phosphors. The flexible scintillator was fabricated using a molding technique. The luminescence properties were investigated under photo, proton, and X-ray excitation at room temperature. The scintillator exhibited sharp and narrow emission peaks attributed to f-f transitions, and a decay time of 14 μ s. It demonstrated a sensitivity of 0.638 μ C/R ⋅ cm 3 under an X-ray dose of 1.841 R. This study demonstrates a high performance flexible scintillator suitable for advanced radiation detection applications in medical imaging and safety monitoring. • Flexible scintillator with Lu 2 GdAl 3 Ga 2 O 12 :Pr 2 O 3 phosphors fabricated using PDMS. • Exhibits sharp emission peaks (450–850 nm) due to 4f-4f transitions of Pr 3＋ . • High sensitivity (0.638 μ C/R ⋅ cm 3 ) under X-ray dose of 1.841 R. • Enhanced luminescence with increasing X-ray beam power. • Promising for medical imaging and radiation detection applications.