Journal article

Polythiophene-perylene diimide heterojunction field-effect transistors

Sreenivasa Reddy Puniredd, Adam Kiersnowski, Glauco Battagliarin, Wojciech Zajaczkowski, Wallace WH Wong, Nigel Kirby, Klaus Muellen, Wojciech Pisula

JOURNAL OF MATERIALS CHEMISTRY C | ROYAL SOC CHEMISTRY | Published : 2013

Abstract

Thin film field-effect transistors based on binary blends of poly(3-hexylthiophene) (P3HT) and two perylene diimide (PDI) derivatives with different alkyl substituents have been investigated in terms of device performance, microstructure and molecular organization on the surface. For the same blend ratios the PDIs phase separate differently due to solubility variation. Blends with a horizontal phase separation between the donor and acceptor show ambipolar behavior due to well defined homogenous pathways for both charge carriers. In this layer arrangement the polymer is located near the dielectric interface, while the PDI molecules crystallize on top of the film. Interestingly, the electron m..

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University of Melbourne Researchers

Grants

Awarded by ERC Advanced Grant NANOGRAPH


Awarded by Australian Research Council


Awarded by European Community's Seventh Framework Programme ONE-P


Awarded by DFG Priority Program


Awarded by DFG MU


Awarded by ESF Project GOSPEL


Awarded by Marie Curie Intra European Fellowship granted within 7th EU Framework program


Funding Acknowledgements

The authors thank G. Glasser and I. Lieberwirth for the cross-sectional SEM images and also for helpful discussions. This work was financially supported by the ERC Advanced Grant NANOGRAPH (AdG-2010-267160), Australian Solar Institute (Fellowship for W. W. H. Wong and project grant), Australian Research Council (DP0877325), the AAS-BMBF Australia-Germany Solar Photovoltaic Research Exchange Program, the German Science Foundation (Korean-German IR TG), the European Community's Seventh Framework Programme ONE-P (grant agreement no. 212311), DFG Priority Program SPP 1355, DFG MU 334/32-1, DFG Priority Program SPP 1459, and ESF Project GOSPEL (Ref Nr: 09-EuroGRAPHENE-FP-001). A. Kiersnowski acknowledges the support from Marie Curie Intra European Fellowship (PIEF-GA-2009-253521) granted within 7th EU Framework program. The temperature dependent GIWAXS experiments were undertaken on the SAXS/WAXS beamline at the Australian Synchrotron, Victoria, Australia.