6 October 2014 Nanoaggregation of p3ht in chloroform-anisole solution: relationship between morphology and electrical properties
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Abstract
Recent studies of poly(3-hexylthiophene) solutions demonstrate that „sample history” (solution preparation, storage conditions) affects the aggregation process(es) and, consequently, electrical properties. In this paper, we demonstrate the evolution of UV-Vis spectra and the formation of additional red-shifted peaks which visualize the aggregation of p3ht chains. We report comparative study of p3ht based organic field effect transistors fabricated by spin coating using fresh and aged (for 6 months) chloroform solutions with anisole addition. Three order of magnitude improvement in the oFET charge carrier mobility is exhibited. These results provide new insight into p3ht crystallization process(es) and nanofiber-based oFETs.
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U. Bielecka, K. Janus, W. Bartkowiak, "Nanoaggregation of p3ht in chloroform-anisole solution: relationship between morphology and electrical properties", Proc. SPIE 9185, Organic Field-Effect Transistors XIII; and Organic Semiconductors in Sensors and Bioelectronics VII, 91850E (6 October 2014); doi: 10.1117/12.2061626; https://doi.org/10.1117/12.2061626
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