Hot Luminescence of Self‐Trapped Excitons in Alkali Halide Crystals | Zendy

Hizhnyakov V. V. | Zendy; Plekhanov V. G. | Zendy; Shepelev V. V. | Zendy; Zavt G. S. | Zendy

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Hot Luminescence of Self‐Trapped Excitons in Alkali Halide Crystals

Author(s) -

Hizhnyakov V. V.,

Plekhanov V. G.,

Shepelev V. V.,

Zavt G. S.

Publication year - 1981

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221080230

Subject(s) - exciton , luminescence , halide , relaxation (psychology) , alkali metal , spectral line , excitation , biexciton , trapping , atomic physics , emission spectrum , chemistry , lattice (music) , molecular physics , materials science , condensed matter physics , physics , quantum mechanics , optoelectronics , inorganic chemistry , social psychology , psychology , ecology , organic chemistry , acoustics , biology

The hot luminescence of self‐trapping excitons is discovered in NaI and KI single crystals. The temperature behaviour of hot emission spectra in the range of 4.2 to 170 K and the corresponding excitation spectra are studied. Basing on the theory of resonant secondary emission developed recently a description of the observed luminescence in terms of the relaxation of a configurational coordinate is given. The calculations of local lattice dynamics of a self‐trapped exciton determining its relaxation law and the shape of the hot emission spectra are presented. A comparison of the theory with the experiment provides a detailed picture of the exciton relaxation into the self‐trapped state.

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