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FEMTOSECOND SPECTROSCOPY OF SELF-TRAPPING PROCESSES OF HOLES AND EXCITONS IN ALKALI-HALIDES

IWAI, S; TOKIZAKI, T; NAKAMURA, A; SHIBATA, T; TANIMURA, K; SHLUGER, A; ITOH, N; (1994) FEMTOSECOND SPECTROSCOPY OF SELF-TRAPPING PROCESSES OF HOLES AND EXCITONS IN ALKALI-HALIDES. In: JOURNAL OF LUMINESCENCE. (pp. 720 - 722). ELSEVIER SCIENCE BV

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Abstract

By pump and probe experiments we investigated self-trapping processes of holes and excitons in KI and RbI crystals. It is found that a free hole is relaxed initially into a one-center self-trapped hole (small polaron) and subsequently a two-center self-trapped hole (V(k) center) is formed. The self-trapping of electron-hole pairs involves a one-center self-trapped hole correlated with an electron as a precursor state for a self-trapped exciton.

Type: Proceedings paper
Title: FEMTOSECOND SPECTROSCOPY OF SELF-TRAPPING PROCESSES OF HOLES AND EXCITONS IN ALKALI-HALIDES
Event: 1993 International Conference on Luminescence (ICL 93)
Location: UNIV CONNECTICUT, STORRS, CT
Dates: 1993-08-09 - 1993-08-13
UCL classification: UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy
URI: http://discovery.ucl.ac.uk/id/eprint/20686
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