Exciton properties of selected aromatic hydrocarbon systems

We have examined the singlet excitons in two representatives of acene-type (tetracene and pentacene) and phenacene-type (chrysene and picene) molecular crystals, respectively, using electron energy-loss spectroscopy at low temperatures. We show that the excitation spectra of the two hydrocarbon families significantly differ. Moreover, close inspection of the data indicates that there is an increasing importance of charge-transfer excitons at lowest excitation energy with increasing length of the molecules.


Published in:
European Physical Journal B, 86, 2
Year:
2013
Publisher:
New York, Springer
ISSN:
1434-6028
Laboratories:




 Record created 2013-04-19, last modified 2018-03-17


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