Electronic relaxation effects in condensed polyacenes: A high-resolution photoemission study
Rocco MLM, Haeming M, Batchelor DR, Fink R, Schoell A, Umbach E (2008)
Publication Type: Journal article, Original article
Publication year: 2008
Journal
Original Authors: Rocco M.L.M., Haeming M., Batchelor D.R., Fink R., Scholl A., Umbach E.
Publisher: American Institute of Physics (AIP)
Book Volume: 129
Article Number: 074702
Journal Issue: 7
DOI: 10.1063/1.2966356
Abstract
We present a high-resolution photoelectron spectroscopy investigation of condensed films of benzene, naphthalene, anthracene, tetracene, and pentacene. High spectroscopic resolution and a systematic variation of the molecular size allow a detailed analysis of the fine structures. The line shapes of the C 1s main lines are analyzed with respect to the different contributions of inhomogeneous broadening, vibronic coupling, and chemical shifts. The shake-up satellite spectra reveal trends, which give insight into the charge redistribution within the molecule upon photoexcitation. In particular, the shake-up between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) increases in intensity and moves closer toward the C 1s main line if the size of the aromatic system is increased. An explanation is given on the basis of the delocalization of the aromatic system and its capability in screening the photogenerated core hole. A comparison of the HOMO-LUMO shake-up position to the optical band gap gives additional insight into the reorganization of the electronic system upon photoexcitation. © 2008 American Institute of Physics.
Authors with CRIS profile
Involved external institutions
Julius-Maximilians-Universität Würzburg
Germany (DE)
Universidade Federal do Rio de Janeiro (UFRJ) / Federal University of Rio de Janeiro
Brazil (BR)
Germany (DE)
Universidade Federal do Rio de Janeiro (UFRJ) / Federal University of Rio de Janeiro
Brazil (BR)
How to cite
APA:
Rocco, M.L.M., Haeming, M., Batchelor, D.R., Fink, R., Schoell, A., & Umbach, E. (2008). Electronic relaxation effects in condensed polyacenes: A high-resolution photoemission study. Journal of Chemical Physics, 129(7). https://doi.org/10.1063/1.2966356
MLA:
Rocco, M. L. M., et al. "Electronic relaxation effects in condensed polyacenes: A high-resolution photoemission study." Journal of Chemical Physics 129.7 (2008).
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