Abstract
The absorption spectra at 300 K, the emission and excitation spectra at 77 K and 300 K of BaBr2−Sn phosphor have been studied. The complicated structure observed in the absorption and excitation spectra was connected with transitions to the components of the1P1,3P1 and3P2 excited states in tin centers which preserve the symmetry of the basic lattice. There has also been observed a complicated structure of the emission spectrum at 77 K which unlike all alkali earth halide phosphors observed so far, manifests itself also in the visible region of the spectrum.
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