Solution processing of polymer semiconductor: Insulator blends-Tailored optical properties through liquid-liquid phase separation control
Treat, Neil D.
Scaccabarozzi, Alberto D.
Razzell Hollis, Joseph
Fleischli, Franziska D.
Bannock, James H.
de Mello, John
Michels, Jasper J.
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Abstract© 2014 Wiley Periodicals, Inc. It has been demonstrated that the 0-0 absorption transition of poly(3-hexylthiophene) (P3HT) in blends with poly(ethylene oxide) (PEO) could be rationally tuned through the control of the liquid-liquid phase separation process during solution deposition. Pronounced J-like aggregation behavior, characteristic for systems of a low exciton band width, was found for blends where the most pronounced liquid-liquid phase separation occurred in solution, leading to domains of P3HT and PEO of high phase purity. Since liquid-liquid phase separation could be readily manipulated either by the solution temperature, solute concentration, or deposition temperature, to name a few parameters, our findings promise the design from the out-set of semiconductor:insulator architectures of pre-defined properties by manipulation of the interaction parameter between the solutes as well as the respective solute:solvent system using classical polymer science principles.
CitationHellmann C, Treat ND, Scaccabarozzi AD, Razzell Hollis J, Fleischli FD, et al. (2014) Solution processing of polymer semiconductor: Insulator blends-Tailored optical properties through liquid-liquid phase separation control. J Polym Sci Part B: Polym Phys 53: 304–310. Available: http://dx.doi.org/10.1002/polb.23656.
SponsorsThis work was supported by a KAUST Global Collaborative Research Academic Excellence Alliance (AEA) grant. N. Stingelin is in addition supported by a European Research Council (ERC) Starting Independent Research Fellowship under the grant agreement no. 279587. C. Hellmann highly acknowledges the experimental support of Bob C. Schroeder and Iain McCulloch. N.D. Treat acknowledges support from the NSF IRFP (OISE 1201915) and European Research Council Marie Curie International Incoming Fellowship under Grand Agreement Number 300091. F. Fleischli acknowledges the grant for prospective researchers from the Swiss National Science Foundations. J. Bannock is funded under an EPSRC Doctoral Training Centre in Plastic Electronics (grant number EP/G037515/1) and holds an Industrial Fellowship with the Royal Commission for the Exhibition of 1851. J.-S. Kim acknowledges the EPSRC Centre for Doctoral Training (EP/G037515/1).