1. Unveiling of UV intrinsic luminescence in (Lu,Y)2SiO5:Ce3+ single crystals.
- Author
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Pankratova, Viktorija, Chernenko, Kirill, Bocharov, Dmitry, Chesnokov, Andrew, Sychikova, Yana, Popov, Anatoli I., and Pankratov, Vladimir
- Subjects
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SINGLE crystals , *LUMINESCENCE , *SYNCHROTRON radiation , *VACUUM ultraviolet spectroscopy , *LUMINESCENCE spectroscopy , *REACTIVE oxygen species , *FAR ultraviolet radiation , *SCINTILLATORS - Abstract
Intrinsic luminescence in Ce-doped (Lu,Y) 2 SiO 5 (or LYSO:Ce) single crystals have been studied by means of excitation luminescence spectroscopy in the vacuum ultraviolet energy range under synchrotron radiation. A previously unreported luminescence band with emission at 250 nm has been discovered as well as its thermal behavior was described in the temperature range 10–120 K. The excitation spectra as well as time-resolved properties of this band suggest that this emission corresponds either to the singlet component of self-trapped exciton or to a self-trapped exciton in the lutetium sublattice of LYSO single crystals. • New previously unreported intrinsic emission band at 250 nm has been observed in LYSO single crystals. • Temperature dependencies of intrinsic luminescence have been measured and analyzed. • Two possible origins of new 250 nm emission are proposed and discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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