High pressure luminescence and time resolved spectra of La2Be2O5:Pr |
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| Authors: | S MahlikM Malinowski M Grinberg |
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| Affiliation: | a Institute of Experimental Physics, University of Gdańsk, Wita Stwosza 57, 80-952 Gdańsk, Poland
b Institute of Micro- and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland |
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| Abstract: | We present luminescence, luminescence excitation and luminescence time resolved spectra of La2Be2O5:Pr3+ system. We used high pressure spectroscopy approaches, with high pressure applied in diamond anvil cell (DAC) and sapphire anvil cell (SAC), for detailed analysis of luminescence related to the 4f5d → 4f2 and 4f2 → 4f2 transitions. We present effect of up-converted luminescence related to 4f5d → 4f2 transition excited with 488 nm. We also discussed possibility of existence of praseodymium trapped exciton (PTE) states in La2Be2O5:Pr3+ system. Lack of the PTE is attributed to high quantity of bulk modulus of this material. |
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| Keywords: | La2Be2O5:Pr3+ High pressure spectroscopy Impurity trapped exciton luminescence |
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