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Phonon-assisted decay of excitons in anthracene crystals

✍ Scribed by S. V. Marisova; E. N. Myasnikov; A. N. Lipovchenko

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
450 KB
Volume
115
Category
Article
ISSN
0370-1972

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✦ Synopsis

Abstract

The reflection spectra, R(ω), are investigated from the (201) face of anthracene single crystals at low temperatures (4.2 to 60 K). Absence of surface effects makes possible to judge from the reflection curve on the spectral dependence of the decay parameter, γ, due to exciton‐phonon interaction. The calculation of γ(ω) is made by use of a nomogram graphically representing the functional relation between the values R, ω, and γ. It is shown that the decay parameter is essentially frequency dependent at low temperatures. On the basis of the calculated γ(ω) the mean value is estimated of the interaction energy of excitons with acoustic and optical phonons in anthracene crystals.

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