Dresden 2011 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 88: Metal substrates: Adsorption of organic / bio molecules IX

O 88.2: Vortrag

Donnerstag, 17. März 2011, 17:30–17:45, PHY C213

Multi-component alternating nanostructures of functional organic molecules with adjustable feature size — •Dingyong Zhong, Lifeng Chi, and Harald Fuchs — Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Straβe 10, 48149 Münster, Germany

Since the diffusion length of excitons in organic semiconducting materials is typically in the range of ten(s) nanometers, segregation of different functional organic molecules in such length scales is of importance to promote electron-hole separation and therefore increasing the energy conversion efficiency of organic photovoltaic devices. Here we report a bottom-up strategy for fabricating multi-component alternating organic nanostructures based on the pre-template effect of vicinal surfaces. Two and three dimensional multi-component alternating nanostructures up to four components have been fabricated and analyzed by scanning tunneling microscopy. The feature size of the nanostructures is tunable from about ten to several tens nanometers by adjusting the processing temperatures.