Speaker
Thomas Georg Boné
(University of Graz)
Description
In this study the growth and energy level alignment of the rod-like, long chain acene heptacene on a Cu(110) surface is evaluated. Our results show that the orientation of the 7A molecules can be controlled by the preparation conditions. Our combined experimental and computational results show that for heptacene oriented along the Cu rows, the lowest unoccupied molecular orbital (LUMO) and the LUMO+1 are occupied. The LUMO+1 receives no charge for molecules aligned perpendicular to the Cu rows. The possibility to tune the energy level alignment and charge transfer at organic-metal interfaces by means of adjustable molecular alignment is fully corroborated by our experiments and density functional calculations.
Author
Thomas Georg Boné
(University of Graz)
Co-authors
Mr
Andreas Windischbacher
(University of Graz, Institute of Physics)
Ms
Marie S. Sättele
(Institute of Physical and Theoretical Chemistry, University of Tübingen)
Ms
Katharina Greulich
(Institute of Physical and Theoretical Chemistry, University of Tübingen)
Ms
Larissa Egger
(University of Graz, Institute of Physics)
Mr
Thomas Jauk
(Graz University of Technology, Institute of Experimental Physics)
Florian Lackner
(Graz University of Technology, Institute of Experimental Physics)
Mr
Holger F. Bettinger
(University of Tübingen, Institute of Organic Chemistry)
Mr
Heiko Peisert
(Institute of Physical and Theoretical Chemistry, University of Tübingen)
Mr
Thomas Chassé
(University of Tübingen, Institute of Physical and Theoretical Chemistry)
Mr
Michael G. Ramsey
(University of Graz, Institute of Physics)
Mr
Martin Sterrer
(University of Graz, Institute of Physics)
Mr
Georg Koller
(University of Graz, Institute of Physics)
Mr
Peter Puschnig
(University of Graz, Institute of Physics)
