Decay processes in relaxed triplet states of self-trapped excitons in potassium halides

The temperature dependence of lifetimes of the π emission in KCl, KBr and KI has been studied in detail to clarify the spin-lattice relaxation mechanism among zero-field-split triplet sub-levels of the self-trapped excitons. It was concluded that the two-phonon process is very important in KCl and K...

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Bibliographic Details
Published in:Journal of luminescence 1988-02, Vol.40, p.447-448
Main Authors: Mukai, Takuya, Arimoto, Osamu, Kan'no, Ken-ichi, Nakai, Yoshio
Format: Article
Language:English
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Summary:The temperature dependence of lifetimes of the π emission in KCl, KBr and KI has been studied in detail to clarify the spin-lattice relaxation mechanism among zero-field-split triplet sub-levels of the self-trapped excitons. It was concluded that the two-phonon process is very important in KCl and KBr instead of the one-phonon direct process which is dominant in KI.
ISSN:0022-2313
1872-7883
DOI:10.1016/0022-2313(88)90275-X