Molecular Orbital Model for Antimony Luminescent Centers in Fluorophosphate

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Abstract
A detailed semiempirical molecular orbital description of the low‐lying excited states of the antimony luminescent center in fluorophosphate is presented. The MO model is used to interpret both the excitation and emission spectra. Good agreement with experiment is found. The model also explains differences in the characteristics of the excitation and emission spectra which are observed when the phosphor is prepared in the presence or absence of charge‐compensating oxygen.