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Enhanced Charge-Carrier Mobility in High-Pressure-Crystallized Poly(3-hexylthiophene)

Christian Müller, Nikolai D. Zhigadlo, Avinesh Kumar, Mohammed A. Baklar, J. Karpinski, Paul Smith, Theo Kreouzis, and Natalie Stingelin, New York (2011)

Comparison of properties of poly(3-hexylthiophene)s solidified by different procedures – ranging from solution- and melt-casting to crystallization under high pressure – suggests that not only the overall degree of order, i.e. crystallinity, but also the thickness l of the crystalline entities in such semicrystalline semiconducting structures can significantly influence their charge-transport properties, with an increase of the bulk charge-carrier mobility of up to two orders being observed in time-of-flight photoconductivity experiments for systems comprising crystalline features of enlarged l realised by pressure-induced crystallization.

Partners : ICL

Place of Publication : New York

Date of Publication : 2011/02/04

Additional Data : Macromolecules 2011, 44, 1221–1225

Link to the online version of the article.