Evidence for Temperature-Dependent Electron Band Dispersion in Pentacene
Journal Article
·
· Phys. Rev. Lett.
Evidence for temperature-dependent electron band dispersion in a pentacene thin film polymorph on graphite is provided by angle- and energy-dependent ultraviolet photoelectron spectroscopy. The bands derived from the highest occupied molecular orbital exhibit dispersion of {approx}190 meV at room temperature, and {approx}240 meV at 120 K. Intermolecular electronic coupling in pentacene thin films is thus confirmed to be dependent on temperature and possibly crystal structure, as suggested by additional infrared absorption measurements.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 914110
- Report Number(s):
- BNL-78678-2007-JA; PRLTAO; TRN: US200804%%517
- Journal Information:
- Phys. Rev. Lett., Vol. 96; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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