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    Analysis of spectra of neat and lanthanide ion-doped KPb 2Cl 5 excited by synchrotron radiation

    Access Status
    Fulltext not available
    Authors
    Tanner, P.
    Jia, Guohua
    Cheng, B.
    Brik, M.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Tanner, P. and Jia, G. and Cheng, B. and Brik, M. 2012. Analysis of spectra of neat and lanthanide ion-doped KPb 2Cl 5 excited by synchrotron radiation. Physica Status Solidi B: Basic Solid State Physics. 249 (3): pp. 581-587.
    Source Title
    Physica Status Solidi B: Basic Solid State Physics
    DOI
    10.1002/pssb.201147336
    ISSN
    0370-1972
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/14774
    Collection
    • Curtin Research Publications
    Abstract

    The excitation and emission spectra of neat K 2PbCl 5, and also doped with the lanthanide ions Pr 3+, Nd 3+, Er 3+ and Tm 3+ have been recorded at temperatures down to 10K using synchrotron radiation. To facilitate the spectral assignments, a first principles calculation has been performed and despite its inaccuracies it confirms the nature of the lower energy levels of this system. The lowest energy transitions in the excitation spectrum are Pb 2+-centred, whereas the band gap transitions, which are essentially of a charge transfer (CT) nature, are at shorter wavelengths. The emission transitions are likewise assigned to those from the Pb 2+ 3P 1,0 states, and from the band gap. The Stokes shift of the latter transition is ~18000cm -1. Under synchrotron radiation excitation, the energy transfer from the host or Pb 2+ levels to 4f N lanthanide ion levels is not efficient. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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