High pressure luminescence and time resolved spectra of La2Be2O5:Pr3+

Abstract We present luminescence, luminescence excitation and luminescence time resolved spectra of La 2 Be 2 O 5 :Pr 3+ 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 → 4f 2 and 4f 2 → 4f 2 transitions. We present effect of up-converted luminescence related to 4f5d → 4f 2 transition excited with 488 nm. We also discussed possibility of existence of praseodymium trapped exciton (PTE) states in La 2 Be 2 O 5 :Pr 3+ system. Lack of the PTE is attributed to high quantity of bulk modulus of this material.