Mixed self-assembled monolayer of molecules with dipolar and acceptor character—Influence on hysteresis and threshold voltage in organic thin-film transistors

  • In this report, we investigate the impact of the molecular dipole moment and redox active head groups (C60) in pure and mixed self-assembled monolayers (SAMs), which serve as an ultra-thin hybrid dielectric layer in low-voltage operating organic thin-film transistors. We show that the dipole of the SAM-forming molecules affects the threshold voltage, while the concentration of redox-active C60 moieties determines the hysteresis in devices with α,α′-dihexyl-sexithiophene and pentacene as organic semiconductors.

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Author:Abdesselam Jedaa, Michael Salinas, Christof M. Jäger, Timothy Clark, Alexander Ebel, Andreas Hirsch, Marcus Halik
Document Type:Article
Year of Completion:2012
Publishing Institution:Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Release Date:2012/11/08
Tag:dielectric hysteresis; dielectric thin films; molecular moments; monolayers; organic semiconductors
Original publication:Applied Physics Letters 100.6 (2012): 06.11.2012 <http://apl.aip.org/resource/1/applab/v100/i6/p063302_s1>
Institutes:Naturwissenschaftliche Fakultät / Naturwissenschaftliche Fakultät -ohne weitere Spezifikation-
Dewey Decimal Classification:Naturwissenschaften und Mathematik / Chemie / Chemie und zugeordnete Wissenschaften
open_access (DINI-Set):open_access
Collections:Universität Erlangen-Nürnberg / Allianzlizenzen / Allianzlizenzen 2012

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