| Numéro |
J. Phys. Colloques
Volume 46, Numéro C7, Octobre 1985
Fifth International Conference on Dynamical Processes in the Excited States of Solids / Dynamique des Etats Excités dans les Solides
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|---|---|---|
| Page(s) | C7-363 - C7-367 | |
| DOI | https://doi.org/10.1051/jphyscol:1985765 | |
Fifth International Conference on Dynamical Processes in the Excited States of Solids / Dynamique des Etats Excités dans les Solides
J. Phys. Colloques 46 (1985) C7-363-C7-367
DOI: 10.1051/jphyscol:1985765
Huygens Laboratory, University of Leiden, Leiden, The Netherlands
J. Phys. Colloques 46 (1985) C7-363-C7-367
DOI: 10.1051/jphyscol:1985765
OPTICAL RELAXATION PROCESSES IN ORGANIC AMORPHOUS AND SEMI-CRYSTALLINE SYSTEMS AT LOW TEMPERATURES
H.P.H. Thijssen, R. van den Berg et S. VölkerHuygens Laboratory, University of Leiden, Leiden, The Netherlands
Abstract
The optical homogeneous linewidth in organic amorphous systems at low temperatures (0.3-20K) follows a T1.3-temperature dependence, independent of guest and host molecule. For T → 0 it extrapolates to the lifetime-limited value. In semi-crystalline materials a stronger T-dependence is found. A study of ionic dyes shows that optical spectra, electron-phonon interactions and photochemistry are correlated with host polarity.