Berlin 2005 – wissenschaftliches Programm
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SYOO: Organic Optoelectronics and Photonics
SYOO 6: Poster
SYOO 6.66: Poster
Montag, 7. März 2005, 18:00–20:00, Poster TU A
Functional Nanostructures for Electronic Devices — •Frank Sperka1, Elena Mena-Osteritz2, and Othmar Marti1 — 1Dept. Experimental Physics, University of Ulm — 2Dept. Organic Chemistry, University of Ulm
The aim of this project is to produce nanostructured surfaces on structured substrates addapted to molecular structures. Furthermore we want to study the local electric and optical properties of those sufaces.
Various series of self-assembly-structures of macrocycles Cyclo(terthiophen-diine) like C[3T-DA]n, Cyclo(quinquethiophen-diine), C[5T-DA]n and Cyclo[n]thiophenes C[n]T were studied with STM. Different patterns and nanostructures for different molecule-symmetries and diameters (1-5 nm) of the cycles were found.
The characterization of the devices will be done with a combined AFM/STM. A combined AFM/STM distance-control can avoid the damage of the tip in a nonconductive region of a sample. The concept of such an AFM/STM-combination is described. Combined with SNOM-techniques and/or confocal fluorescence microscopy an extensive electro-optical characterization will be possible.