High-performance organic integrated circuits based on solution processable polymer-small molecule blends

Smith, Jeremy; Hamilton, Richard; Heeney, Martin; de Leeuw, Dago M.; Cantatore, Eugenio; Anthony, John E.; McCulloch, Iain; Bradley, Donal D. C.; Anthopoulos, Thomas D.
December 2008
Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p253301
Academic Journal
The prospect of realizing high-performance organic circuits via large-area fabrication is attractive for many applications of organic microelectronics. Here we report solution processed organic field-effect transistors and circuits based on polymer-small molecule blends comprising of polytriarylamine and 5,11-bis(triethylsilylethynyl) anthradithiophene. By optimizing blend composition and deposition conditions we are able to demonstrate short channel, bottom-gate, bottom-contact transistors with high mobility and excellent reproducibility. Using these transistors we have built unipolar voltage inverters and ring oscillators with a single stage delay of 712 ns. These are among the fastest organic circuits reported to date and could satisfy the performance requirements of low-end electronic applications.


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