Abstract
Transparent Pr 3+-doped Lu 0.8Sc 0.2BO 3 crystal has been grown by Czochralski method. The crystal structure is confirmed to be hexagonal with space group R 3 ¯ c checked by XRD measurement. The optical transmission spectra (absorption spectra), photoluminescence emission and excitation spectra, fluorescence decay time and the X-ray excited luminescence spectra of the crystal are measured at room temperature. The cut-off edge of this material locates at round 250 nm and there is a broad absorption in the region from 250–500 nm. The photoluminescence emission spectrum is dominated by fast 5d4f 1 → 4f 2 band peaking at 303 nm having 11.9 ns decay time. The measurement results show that the Pr 3+-doped Lu 0.8Sc 0.2BO 3 crystal, due to high density, fast decay time, high scintillation efficiency and non-hygroscopic property, could be a promising scintillator.
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