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

Patrick Marmont; Nicolas Battaglini; Philippe Lang; Gilles Horowitz; Jaehyung Hwang; Antoine Kahn; Claire Amato; Patrick Calas

doi:10.1016/j.orgel.2008.01.004

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

Patrick Marmont, Nicolas Battaglini, Philippe Lang, Gilles Horowitz, Jaehyung Hwang, Antoine Kahn, Claire Amato, Patrick Calas

Research output: Contribution to journal › Article › peer-review

102 Scopus citations

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.

Original language	English (US)
Pages (from-to)	419-424
Number of pages	6
Journal	Organic Electronics
Volume	9
Issue number	4
DOIs	https://doi.org/10.1016/j.orgel.2008.01.004
State	Published - Aug 2008

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Chemistry(all)
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

Keywords

Atomic force microscopy
Contact resistance
Organic thin-film transistor
Self-assembled monolayers
Ultraviolet photoelectron spectroscopy

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10.1016/j.orgel.2008.01.004

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title = "Improving charge injection in organic thin-film transistors with thiol-based self-assembled monolayers",

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.",

keywords = "Atomic force microscopy, Contact resistance, Organic thin-film transistor, Self-assembled monolayers, Ultraviolet photoelectron spectroscopy",

author = "Patrick Marmont and Nicolas Battaglini and Philippe Lang and Gilles Horowitz and Jaehyung Hwang and Antoine Kahn and Claire Amato and Patrick Calas",

year = "2008",

month = aug,

doi = "10.1016/j.orgel.2008.01.004",

language = "English (US)",

volume = "9",

pages = "419--424",

journal = "Organic Electronics: physics, materials, applications",

issn = "1566-1199",

publisher = "Elsevier",

number = "4",

}

Improving charge injection in organic thin-film transistors with thiol-based self-assembled monolayers. / Marmont, Patrick; Battaglini, Nicolas; Lang, Philippe; Horowitz, Gilles; Hwang, Jaehyung; Kahn, Antoine; Amato, Claire; Calas, Patrick.

In: Organic Electronics, Vol. 9, No. 4, 08.2008, p. 419-424.

Research output: Contribution to journal › Article › peer-review

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T1 - Improving charge injection in organic thin-film transistors with thiol-based self-assembled monolayers

AU - Marmont, Patrick

AU - Battaglini, Nicolas

AU - Lang, Philippe

AU - Horowitz, Gilles

AU - Hwang, Jaehyung

AU - Kahn, Antoine

AU - Amato, Claire

AU - Calas, Patrick

PY - 2008/8

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AB - 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.

KW - Atomic force microscopy

KW - Contact resistance

KW - Organic thin-film transistor

KW - Self-assembled monolayers

KW - Ultraviolet photoelectron spectroscopy

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