Photo-assisted molecular engineering in solution-processed organic thin-film transistors with a blended semiconductor for high mobility anisotropy

Park, J.; Keum, C.-M.; Kim, J.-H.; Lee, S.-D.; Payne, M.; Petty, M.C.; Anthony, J.E.; Bae, J.-H.

doi:10.1063/1.4774001

Photo-assisted molecular engineering in solution-processed organic thin-film transistors with a blended semiconductor for high mobility anisotropy

Park, J.; Keum, C.-M.; Kim, J.-H.; Lee, S.-D.; Payne, M.; Petty, M.C.; Anthony, J.E.; Bae, J.-H.

Authors

J. Park

C.-M. Keum

J.-H. Kim

S.-D. Lee

M. Payne

M.C. Petty

J.E. Anthony

J.-H. Bae

Abstract

This paper reports a viable method for enhancing mobility anisotropy in solution-processed organic thin-film transistors (TFTs) by irradiating linearly polarized ultraviolet (LPUV) light onto a 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-pentacene)/poly (vinyl cinnamate) (PVCi) blended semiconductor film. The needle-like crystalline domains in the blended semiconductor film were aligned along the polarization direction of the LPUV light, suggesting that TIPS-pentacene molecules are oriented anisotropically due to an intermolecular interaction and aggregation with the photo-aligned PVCi molecules. The mobility anisotropy reached up to about 50, which is the highest value achieved in solution-processed organic TFTs with a polymeric insulator.

Citation

Park, J., Keum, C., Kim, J., Lee, S., Payne, M., Petty, M., …Bae, J. (2013). Photo-assisted molecular engineering in solution-processed organic thin-film transistors with a blended semiconductor for high mobility anisotropy. Applied Physics Letters, 102(1), Article 013306. https://doi.org/10.1063/1.4774001

Journal Article Type	Article
Publication Date	Jan 7, 2013
Deposit Date	Jul 25, 2014
Publicly Available Date	Sep 9, 2014
Journal	Applied Physics Letters
Print ISSN	0003-6951
Electronic ISSN	1077-3118
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	102
Issue	1
Article Number	013306
DOI	https://doi.org/10.1063/1.4774001
Keywords	Thin film transistors, Anisotrophy, Organic semiconductors, Carrier mobility, Insulators.

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Copyright Statement
© 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters 102, 013306 (2013) and may be found at http://dx.doi.org/10.1063/1.4774001