Dresden 2011 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
DS: Fachverband Dünne Schichten
DS 32: Spins in Organic Materials III (Focused Session, jointly with MA -- Organisers: Salvan, Hess, Timm)
DS 32.5: Vortrag
Mittwoch, 16. März 2011, 18:00–18:15, GER 37
Hybrid organic/inorganic heterojunctions based on rolled-up nanomembranes — •Carlos Cesar Bof Bufon1, Juan Diego Ariaz Espinosa1, Maria Esperanza Navarro Fuentes1, Dominic J. Thurmer1, and Oliver G. Schmidt1,2 — 1Institute for Integrative Nanosciences, IFW-Dresden, Dresden, Germnay — 2Material Systems for Nanoelectronics, Chemnitz University of Technology, Chemnitz, Germany
We present a novel method, based on self-released strained nanomembranes, for contacting molecules by using metals and/or semiconductors as electrodes to form hybrid heterojunctions. During release of the nanomembrane, the strain relaxation gives rise to a self-rolling process in which the membrane bonds back to substrate top surface where the molecular layer was previously deposited. By this means, we are able to fabricate not only the standards metal-molecule-metal and metal-molecule-semiconductor heterojunctions but also the unique semiconductor-molecule-semiconductor heterojunctions. In this last case, the type of doping and its concentration can be independently for each electrode in order to tune the device electronic properties. The strained nanomembrane based electrodes provide a soft and robust contact on top of the molecular layer. Consequently, no damage to the molecules and no short circuits via possible pinholes have been observed. Furthermore, applying the self-rolling phenomenon, we achieve an approach that is fully integrative on a chip, and several components can be fabricated in parallel using well-established semiconductor processing technologies.