A comparative analysis of the spectral characteristics of triplet self-trapped excitons and F
2 centers in alkali halide crystals |
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| Authors: | L A Lisitsyna V I Korepanov V M Lisitsyn |
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| Institution: | (1) Tomsk State Civil Engineering University, Solyanaya pl. 2, Tomsk, 634003, Russia;(2) Tomsk Polytechnical University, Tomsk, 634034, Russia |
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| Abstract: | A comparative analysis of the spectral characteristics of self-trapped excitons (STE) and F 2 centers in the states with the same spin multiplicity is carried out. Based on the analysis, a criterion for the separation of the triplet-triplet (T-T) absorptive transitions in the electronic and hole components of the STE in any alkali halide crystal is proposed. It is concluded that inhomogeneities in the form of a homological cation or anion impurity in the nearest coordination shells of the spatial position of the STE, rather than hole, affect the spectral position of the T-T transitions in the electron component of the STE. |
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