Optical and luminescent properties of the lead and barium molybdates

Time-resolved luminescence as well as excitation and reflectivity spectra of the oriented lead and barium molybdate single crystals were studied using synchrotron radiation. Features in reflectivity spectra in the fundamental absorption region were analyzed. The contribution of electronic states of lead cation to the formation of the bandgap in PbMoO4 is supposed. The role of lead states in the intrinsic luminescence of PbMoO4 is discussed. (C) 2004 Elsevier Ltd. All rights reserved.