Controlled deposition of highly ordered soluble acene thin films: effect of morphology and crystal orientation on transistor performance.

Sele, Christoph W; Kjellander, B K Charlotte; Niesen, Bjoern; Thornton, Martin J; van der Putten, J Bas P H; Myny, Kris; Wondergem, Harry J; Moser, Armin et al. · Adv Mater · 2009

basic_science · Level V

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Abstract

Controlling the morphology of soluble small molecule organic semiconductors is crucial for the application of such materials in electronic devices. Using a simple dip-coating process we systematically vary the film drying speed to produce a range of morphologies, including oriented needle-like crystals. Structural characterization as well as electrical transistor measurements show that intermediate drying velocities produce the most uniformly aligned films.