Spectral, temporal, and intensity characteristics of bismuth orthogermanate luminescence are investigated under photoexcitation with various photon quantum energies in the temperature range of 6 to 300 K. Besides the usually observed band peaked at ≈2.5 eV, two fast decaying emission components are studied. The mechanisms of luminescence are accounted for in terms of self‐trapped excition recombination and of hot luminescence of selectively excited bismuth ions.
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