Dresden 2009 – scientific programme

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SYOP: Symposium Organic Photovoltaics: From Single Molecules to Devices

SYOP 2: Organic Photovoltaics: from Single Molecules to Devices

SYOP 2.1: Invited Talk

Thursday, March 26, 2009, 09:30–10:00, BAR SCHÖ

Material Design for Organic and Hybrid Solar Cells – structural to functional control on all length scales – — •Mukundan Thelakkat, Michael Sommer, Ruth Lohwasser, and Sebastien Maria — Applied Functional Polymers, Department of Macromolecular Chemistry I, University of Bayreuth, 95440 Bayreuth, Germany

One of the challenging aspects in designing and developing novel functional materials is to incorporate the desired optical and /or electrical properties maintaining their film-forming and thermal characteristics which make them suitable for thin film device applications. An important criterion for photovoltaic applications is that these materials should have well-defined nanostructured morphology in thin films in order to be capable of fulfilling the complex functions of charge transfer and transport simultaneously. This morphological control on a nanoscopic level controls the interface between the functional domains as well as the long term stability of such devices. We have demonstrated the chain of control on all length scales using the self-assembly principle of a fully functionalised block polymer for photovoltaic applications.

This contribution covers the design, synthesis and properties of some novel low molecular weight semiconductors as well as poly(3-hexylthiophene) -block- Poly(perylenebisimide acrylate. Block copolymers those allow the incorporation of semiconductor quantum dots or nanocrystals to get hybrid systems with morphology control will also be discussed. The characterization of these materials in thin films and their application in devices will be presented.