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Towards solution-processed ambipolar organic thin film transistors based on α,ω-hexyl-distyryl-bithiophene (DH-DS2T) and a fluorocarbon-substituted dicyanoperylene (PDIF-CN2)

S. NÉNON1, T. WATANABE2, H. BRISSET3, Z. CHEN4, J. ACKERMANN1, F. FAGES1, S. BERNARDINI5, M. BENDAHAN5, K. AGUIR5, N. YOSHIMOTO2, C. VIDELOT-ACKERMANN1,*

Affiliation

  1. Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), CNRS-UPR-3118, Aix Marseille Université, Campus Luminy, Case 913, 13288 Marseille Cedex 09, France.
  2. Department of Materials Science and Engineering, Iwate University, 4-3-5 Ueda, Morioka 020-8551, Japan
  3. Present address: Prof. H. Brisset, Laboratoire Matériaux Polymères-Interfaces-Environnement Marin (MAPIEM - EA 4323), Université du Sud Toulon-Var, ISITV, BP 56, 83162 La Valette du Var, France
  4. Polyera Corporation, 8045 Lamon Avenue Skokie, IL 60077, USA.
  5. Aix-Marseille Université, IM2NP-UMR CNRS 6242, Faculté de St Jérôme, service 152, Equipe Microcapteurs, 13397 cedex 20, Marseille, France

Abstract

Drop casting of solutions based on oligomers as active layers in organic thin film transistors (OTFTs) was studied towards the realization of solution-processed ambipolar devices. As p- and n-type semiconductors, α,ω-hexyl-distyryl-bithiophene (DH-DS2T) and N,N’-1H,1H-perfluorobutyl dicyanoperylenediimide (PDIF-CN2) were used, respectively. Solutions were prepared by mixing different ratios of PDIF-CN2 versus DH-DS2T. Structure and morphology of thin films were studied by Xray diffraction (XRD) and atomic force microscopy (AFM). With the fine tuning of PDIF-CN2 amount, both p- and n- charge carrier transport could be measured in OTFT devices based on blend DH-DS2T:PDIF-CN2 as active layer to form so-called ambipolar OTFTs..

Keywords

Organic semiconductors, Drop casting, X-ray diffraction, Morphology, Ambipolar transport.

Submitted at: May 23, 2011
Accepted at: Feb. 20, 2012

Citation

S. NÉNON, T. WATANABE, H. BRISSET, Z. CHEN, J. ACKERMANN, F. FAGES, S. BERNARDINI, M. BENDAHAN, K. AGUIR, N. YOSHIMOTO, C. VIDELOT-ACKERMANN, Towards solution-processed ambipolar organic thin film transistors based on α,ω-hexyl-distyryl-bithiophene (DH-DS2T) and a fluorocarbon-substituted dicyanoperylene (PDIF-CN2), Journal of Optoelectronics and Advanced Materials Vol. 14, Iss. 1-2, pp. 131-135 (2012)