Spectroscopic study of anisotropic excitons in single crystal hexacene

Alexey Chernikov, Omer Yaffe, Bharat Kumar, Yu Zhong, Colin Nuckolls, Tony F. Heinz

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The linear optical response of hexacene single crystals over a spectral range of 1.3-1.9 eV was studied using polarization-resolved reflectance spectroscopy at cryogenic temperatures. We observe strong polarization anisotropy for all optical transitions. Pronounced deviations from the single-molecule, solution-phase spectra are present, with a measured Davydov splitting of 180 meV, indicating strong intermolecular coupling. The energies and oscillator strengths of the relevant optical transitions and polarization-dependent absorption coefficients are extracted from quantitative analysis of the data. (Chemical Equation Presented).

Original languageEnglish
Pages (from-to)3632-3635
Number of pages4
JournalJournal of Physical Chemistry Letters
Issue number21
StatePublished - 6 Nov 2014
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2014 American Chemical Society.


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