Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1268558 | Organic Electronics | 2008 | 6 Pages |
Abstract
The aim of this work is to improve charge injection by interposing an appropriately oriented dipole layer between contact and semiconductor in organic thin-film transistors (OTFTs). OTFTs are fabricated with pentacene semiconductor and gold source and drain contacts. The contacts are modified with self-assembled monolayers (SAMs) made of alkane or fluorinated alkane thiols. Ultraviolet photoelectron spectroscopy (UPS) shows a respective decrease and increase of the work function of the electrodes. Consistent with these results, we observe an increase and a decrease, respectively, of the contact resistance of the OTFTs, and a further decrease when shortening the length of the fluorinated molecule.
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Chemistry
Chemistry (General)
Authors
Patrick Marmont, Nicolas Battaglini, Philippe Lang, Gilles Horowitz, Jaehyung Hwang, Antoine Kahn, Claire Amato, Patrick Calas,