Abstract
Emission and excitation spectra of Cs2NaLnCl6 (Ln = Y, Eu, Gd, Er, Yb), Cs2NaYCl6:Ce and
Cs2NaYCl6:Tm have been recorded using synchrotron radiation. With the possible exception of
the case for Ce3+, no 5d →4f transitions are observed and the emission spectra are entirely
assigned to 4f→4f intraconfigurational transitions of Ln3+ in LnCl3−
6 and impurity species.
The excitation spectra comprise intraconfigurational, charge transfer and band-to-band
transitions. Trace impurities of oxy-species or of other lanthanide ions have a profound effect
upon the spectra. The 4f–5d absorption spectra have been simulated by employing the suite of
programs of Professor M F Reid and the results have been included together with the
experimental spectra.
Original language | Undefined/Unknown |
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Pages (from-to) | 395501/1-395501/8 |
Number of pages | 8 |
Journal | Journal of physics. Condensed matter |
Volume | 21 |
Issue number | 39 |
DOIs | |
Publication status | Published - 2009 |