Dresden 2011 – scientific programme

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O: Fachverband Oberflächenphysik

O 36: Poster Session II (Metals; Nanostructures at surfaces; Surface or interface magnetism; Spin-Orbit Interaction at Surfaces; Electron and spin dynamics; Surface dynamics; Methods; Theory and computation of electronic structure)

O 36.68: Poster

Tuesday, March 15, 2011, 18:30–22:00, P4

template fabrication of highly ordered arrays of organic semiconductor nanowires — •Christian Heckel, Stefan Ostendorp, Yong Lei, and Gerhard Wilde — Institut fuer Materialphysik, Wilhelm - Klemm - Str. 10, 48149 Muenster

Porous alumina membrane (PAM) is a widely used template for the fabrication of highly ordered arrays of one-dimensional (1D) nanostructures. The structural parameters of the PAMs are adjustable, including the pore diameter and spacing, and the thickness of the membranes. And thus the structures of the 1D nanomaterials prepared using PAMs can be controlled.

On the other hand, the investigation of organic semiconductors opens a new field of applications in computer technology like twistable displays or printing integrated circuits.

In the current work, these two technologies are combined by depositing organic n-type semiconductors into the pores of PAMs using different synthesizing processes such as molecular evaporation and solution-phase self-assembly. As a result, highly ordered arrays of organic semiconducting wires are obtained within the pores with a diameter of about 50 nm, which indicates that it is possible to fill the pores with organic materials.The properties of these "filled" membranes are characterized by measuring the electrical properties of several nanowires pooled together and also of single nanowires by AFM-based methods.

[1] Y. Lei, W. Cai, G, Wilde, Prog. Mater. Sci., 52, 465 (2007).

[2] J. Puigdollers, Thin Solid Films, 517, 6271 (2009).

[3] A. L. Briseno, Nano Lett., 7, 2847 (2007).