Intermolecular Hybridization Governs Molecular Electrical Doping

Current models for molecular electrical doping of organic semiconductors are found to be at odds with other well-established concepts in that field, like polaron formation. Addressing these inconsistencies for prototypical systems, we present experimental and theoretical evidence for intermolecular...

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Veröffentlicht in:	Physical review letters Jg. 108; H. 3; S. 035502
Hauptverfasser:	Salzmann, Ingo, Heimel, Georg, Duhm, Steffen, Oehzelt, Martin, Pingel, Patrick, George, Benjamin M., Schnegg, Alexander, Lips, Klaus, Blum, Ralf-Peter, Vollmer, Antje, Koch, Norbert
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	United States 18.01.2012
ISSN:	0031-9007, 1079-7114, 1079-7114
Online-Zugang:	Volltext
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Zusammenfassung:	Current models for molecular electrical doping of organic semiconductors are found to be at odds with other well-established concepts in that field, like polaron formation. Addressing these inconsistencies for prototypical systems, we present experimental and theoretical evidence for intermolecular hybridization of organic semiconductor and dopant frontier molecular orbitals. Common doping-related observations are attributed to this phenomenon, and controlling the degree of hybridization emerges as a strategy for overcoming the present limitations in the yield of doping-induced charge carriers.
Bibliographie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114 1079-7114
DOI:	10.1103/PhysRevLett.108.035502