The design of high mobility semiconducting polymers
The further development of organic semiconductors to be utilised in field-effect transistors (OFETs) for incorporation into lightweight, flexible electronic devices, requires high performing, solution processable materials. Polymeric semiconductors offer an attractive combination in terms of appropriate solution rheology for printing processes, mechanical flexibility for rollable processing and applications, but their electrical performance has been significantly lower than amorphous silicon, limiting their application. In this work, we report the design, synthesis and characterisation of a range of thieno[3,2-b]thiophene co-polymers exhibiting high charge carrier mobilities. A detailed study of the polymer thin film morphology reveals an extremely ordered and oriented microstructure. Field effect transistors were fabricated, and their performance and lifetimes will be discussed.
McCulloch, I.; Bailey, C.; Heeney, M.; Shkunov, M.; Sparrowe, D.; Tierney, S.; Kline, J.; Chabinyc, M. The design of high mobility semiconducting polymers. Symposium on Organic Electronics - Materials, Devices, and Applications; Fall Meeting of the Materials Research Society; 2006 November 26 - December 1; Boston MA.