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Article Dans Une Revue Organic Electronics Année : 2008

Improving charge injection in organic thin transistor with thiol-based self-assembled monolayers

Résumé

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.

Dates et versions

hal-00334295 , version 1 (24-10-2008)

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Patrick Marmont, Nicolas Battaglini, Philippe Lang, Gilles Horowitz, Jaehyung Hwang, et al.. Improving charge injection in organic thin transistor with thiol-based self-assembled monolayers. Organic Electronics, 2008, 9, pp.419. ⟨10.1016/j.orgel.2008.01.004⟩. ⟨hal-00334295⟩
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