Curvature as design concept for semiconducting benzodithiophene-containing polymers in organic field effect transistors

Ralph Rieger; Dirk Beckmann; Alexey Mavrinskiy; Wojciech Pisula; Marcel Kastler; Klaus Müllen

doi:10.1117/12.859073

17 August 2010 Curvature as design concept for semiconducting benzodithiophene-containing polymers in organic field effect transistors

Ralph Rieger, Dirk Beckmann, Alexey Mavrinskiy, Wojciech Pisula, Marcel Kastler, Klaus Müllen

Author Affiliations +

Proceedings Volume 7778, Organic Field-Effect Transistors IX; 777809 (2010) https://doi.org/10.1117/12.859073
Event: SPIE Photonic Devices + Applications, 2010, San Diego, California, United States

Abstract

Organic semiconductors are expected to play an important role in low-cost and energy-efficient electronic products, especially transistors. Our concept to improve the active materials is to introduce curvature into the polymer backbone. The beneficial contribution of the curvature is shown by a series of five isomeric polymers which demonstrate that an intermediate degree of curvature is the optimum compromise between good solubility and high order in the film. In this way, a polythiophene is developed that is easily synthesized, well soluble, exhibits high charge-carrier mobility using mild annealing conditions, and is stable under operation. When processed on a flexible substrate, it shows average mobilities as high as 0.5 cm²V^-1s^-1 .

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Ralph Rieger, Dirk Beckmann, Alexey Mavrinskiy, Wojciech Pisula, Marcel Kastler, and Klaus Müllen "Curvature as design concept for semiconducting benzodithiophene-containing polymers in organic field effect transistors", Proc. SPIE 7778, Organic Field-Effect Transistors IX, 777809 (17 August 2010); https://doi.org/10.1117/12.859073

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