The energy level alignment at the metal-organic and organic-organic interfaces of the Cu(100)/benzenethiolate/pentacene heterostructure is studied by photoemission spectroscopy and discussed theoretically using a model that includes, in a consistent way, charge transfer, Pauli repulsion, intrinsic molecular dipoles, and interface screening as a function of coverage. Despite the different nature of the two interfaces, our model provides a unified explanation for the work-function changes at both junctions and enables us to determine the benzenethiolate orientation as a function of coverage.
Barrier formation at organic interfaces in a Cu(100)-benzenethiolate-pentacene heterostructure / Betti, Maria Grazia; Kanjilal, A; Mariani, Carlo; Vazquez, H; DAPPE Y., J; Ortega, J; Flores, F.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 100:(2008), pp. 027601-1-027601-4. [10.1103/PhysRevLett.100.027601]
Barrier formation at organic interfaces in a Cu(100)-benzenethiolate-pentacene heterostructure
BETTI, Maria Grazia;MARIANI, CARLO;
2008
Abstract
The energy level alignment at the metal-organic and organic-organic interfaces of the Cu(100)/benzenethiolate/pentacene heterostructure is studied by photoemission spectroscopy and discussed theoretically using a model that includes, in a consistent way, charge transfer, Pauli repulsion, intrinsic molecular dipoles, and interface screening as a function of coverage. Despite the different nature of the two interfaces, our model provides a unified explanation for the work-function changes at both junctions and enables us to determine the benzenethiolate orientation as a function of coverage.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
