Luminescence spectroscopy and energy level location of lanthanide ions doped in La(PO3)3

The luminescence properties of Ce3+, Pr3+, Nd3+, Sm3+, Eu3+ and Tb3+ doped La(PO3)3 phosphate were studied by vacuum ultra-violet spectroscopy at 10 K which gives information on the energies of 4f-5d excitation and emission and charge transfer bands of the dopants. All data are consistent with available models and have been used to construct the vacuum referred binding energy scheme for all trivalent and all divalent lanthanides in La(PO3)3 phosphate.