Transfer printed organic thin-film transistors using the semiconductors P3HT or pentacene and a polymer dielectric.

ORAL

Abstract

The assembly via the transfer printing process of all components for organic electronic devices onto a plastic substrate has been demonstrated. Both poly(3-hexylthiophene) (P3HT) and pentacene (Pn) have been used as active semiconducting films for such devices without exposing the films to detrimental chemical processes. Transfer printing relies on the difference in adhesion of two substrates towards the material being transferred. Here we use the transfer printing process to fabricate organic thin-film transistors (OTFT) with a range of channel lengths. These devices are used to characterize the contact resistance for both the P3HT and Pn OTFTs. The field-effect mobility of the P3HT devices is measured to be in the range of 0.02 to 0.035 cm$^{2}$/(Vs) which is comparable to the best values reported in the literature and is an order of magnitude higher than the control devices of the unprinted P3HT film as deposited onto a SiO$_{2}$ dielectric layer. These devices are demonstrated using polystyrene (PS), poly(4-vinylphenol) (PVP) and poly methylmethacrylate (PMMA) as dielectric materials and polyethylene terephthalate (PET) as the substrate material.

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Authors

  • Adrian Southard

    Physics UMD

  • Dan Hines

    Laboratory of Physical Sciences

  • Elba Gomar-Nadal

    Materials Research and Engineering Center, Physics Department and the Material Research Science and Engineering Center, Unversity of Maryland, College Park, MD 20742, Physics Department and Materials Research Science and Engineering Center, University of Maryland, College Park, MD 20742

  • Ellen D. Williams

    Physics Department and the Material Research Science and Engineering Center, Unversity of Maryland, College Park, MD 20742, Physics \& MRSEC UMD, U. of Maryland, College Park, Physics Department and the Material Research Science and Engineering Center, University of Maryland, College Park, MD 20742, University of Maryland, Physics Department and Materials Research Science and Engineering Center, University of Maryland, College Park, MD 20742

  • Michael Fuhrer

    Physics and CSR at UMD, University of Maryland