Energy Level Alignment and Electron Transport Through Metal/Organic Contacts
From Interfaces to Molecular Electronics
(Sprache: Englisch)
This book focuses on analyzing theoretically the energy level alignment of different metal/organic interfaces. It presents a combination of a standard DFT calculation with the inclusion of the charging energy (U) of the molecule.
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This book focuses on analyzing theoretically the energy level alignment of different metal/organic interfaces. It presents a combination of a standard DFT calculation with the inclusion of the charging energy (U) of the molecule.
Klappentext zu „Energy Level Alignment and Electron Transport Through Metal/Organic Contacts “
In recent years, ever more electronic devices have started to exploit the advantages of organic semiconductors. The work reported in this thesis focuses on analyzing theoretically the energy level alignment of different metal/organic interfaces, necessary to tailor devices with good performance. Traditional methods based on density functional theory (DFT), are not appropriate for analyzing them because they underestimate the organic energy gap and fail to correctly describe the van der Waals forces.Since the size of these systems prohibits the use of more accurate methods, corrections to those DFT drawbacks are desirable. In this work a combination of a standard DFT calculation with the inclusion of the charging energy (U) of the molecule, calculated from first principles, is presented. Regarding the dispersion forces, incorrect long range interaction is substituted by a van der Waals potential. With these corrections, the C60, benzene, pentacene, TTF and TCNQ/Au(111) interfaces are analyzed, both for single molecules and for a monolayer. The results validate the induced density of interface states model.
Inhaltsverzeichnis zu „Energy Level Alignment and Electron Transport Through Metal/Organic Contacts “
Theoretical Foundation.- Further Developments in IDIS Model.- The IDIS Model at the Molecular Limit.- Results for Various Interfaces: C60, Benzene, TTF, TCNQ and Pentacene Over Au(111).
Bibliographische Angaben
- Autor: Enrique Abad
- 2014, 2013, XVIII, 198 Seiten, Maße: 15,5 x 23,4 cm, Kartoniert (TB), Englisch
- Verlag: Springer, Berlin
- ISBN-10: 3642428681
- ISBN-13: 9783642428685
Sprache:
Englisch
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