Jr. Quagliano et al., OPTICAL CHARACTERIZATION AND ELECTRONIC ENERGY-LEVEL STRUCTURE OF ER3-DOPED CSCDBR3(), The Journal of chemical physics, 105(22), 1996, pp. 9812-9822
Information obtained from optical absorption, excitation, and emission
experiments on erbium doped crystalline CsCdBr3 is analyzed, using a
semiempirical Hamiltonian, to calculate atomic and crystal-field inter
action parameters and electronic state wave functions. A majority of t
he Er3+ ions substitute at a Cd2+ site giving C-3 upsilon point group
symmetry and forming and Er3+ ion dimer center. This dimerization, tog
ether with the material's low phonon energies, and the specific positi
oning of states in the Er3+ (4f(11)) configuration, produce the intere
sting and useful emission properties of the material. Comparisons are
made with other erbium halide crystals, and interaction parameter and
energy-level results for Nd3+: CsCdBr3 are also presented. The inclusi
on of second order correlation crystal-field interaction parameters is
shown to be essential for accurately characterizing splittings of sev
eral J multiplets important in visible emission pathways. (C) 1996 Ame
rican Institute of Physics.