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Spectroscopy of excitons in the polar molecular crystal DMABI

✍ Scribed by S. Jursenas; A. Gruodis; G. Kodis; L. Valkūnas

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
298 KB
Volume
6
Category
Article
ISSN
1616-301X

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✦ Synopsis

This paper considers the origin of the excited states and spectroscopic features of polar molecular compounds of N, Ndimethylaminobenzylidene 1 ,&indandione (DMABI). Evidence of a strong exciton-phonon interaction and its effects on the exciton absorption and luminescence spectra was discovered. The spectral features were related to the crystal structure and were ascribed to self-trapped charge transfer excitons. A weak, narrow luminescence line was also observed in resonance with the lowest absorption band and was attributed to free exciton radiative recombination.

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