Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5377115 | Chemical Physics | 2006 | 7 Pages |
Abstract
The dispersion of the lowest lying singlet electron-hole excitation of pentacene along the reciprocal lattice vector (1Â 0Â 0) has been studied using electron energy-loss spectroscopy. This exciton shows a clear dispersion along the direction with a band width of about 100Â meV. Moreover, the translational symmetry indicated by the exciton band structure does not agree with that reported from diffraction studies. This might be related to the interaction responsible for the dispersion which is of next nearest neighbor type only.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
M. Knupfer, H. Berger,