L. Macalik et al., LUMINESCENCE AND LIFETIMES OF PR3-STATES IN KLA1-XPRX(MOO4)(2) AND KLA1-XPRX(WO4)(2) CRYSTALS( EXCITED), Acta Physica Polonica. A, 90(2), 1996, pp. 301-306
Single crystals of double molybdates and tungstates of tile formula KL
a1-xPrx(MO(4))(2) (M = Mo, W) with a concentration of Pr3+ ions rangin
g from x = 0.1 to x = 0.005 have been prepared. Their electronic absor
ption and emission spectra have been measured and discussed as well as
related to their crystal structures. Both tile multiphonon relaxation
and cross relaxation contribute to the decay of the P-3(0) level of P
r3+ in these two matrices.