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Publication Citation: Combinatorial screening of the effect of temperature on the microstructure and mobility of a high performance polythiophene semiconductor

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Author(s): Leah A. Lucas; Dean M. DeLongchamp; Brandon M. Vogel; Eric K. Lin; Michael J. Fasolka; Daniel A. Fischer; Iain McCulloch; Martin Heeney; Ghassan Jabbour;
Title: Combinatorial screening of the effect of temperature on the microstructure and mobility of a high performance polythiophene semiconductor
Published: January 01, 2007
Abstract: Using a gradient combinatorial approach, the authors report the effects of temperature on the microstructure and hole mobility of poly2,5-bis3-dodecylthiophen-2ylthieno3,2-bthiophene thin films for application in organic field-effect transistors. The gradient heating revealed a detailed dependence on thermal history. Optimal heat treatment achieved mobilities as high as 0.3 cm2 V−1 s−1. Mobility enhancement coincides with an increase in crystal domain size and orientation, all of which occur abruptly at a temperature closely corresponding to a bulk liquid crystal phase transition.
Citation: Applied Physics Letters
Pages: 3 pp.
Keywords: combinatorial analysis;multivariate methods;organic semiconductor;transistor
Research Areas: Polymers
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