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

122 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
General Chemistry
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",

note = "Funding Information: Work at Princeton University was supported by the National Science Foundation (DMR-0408589), the Princeton MRSEC of the National Science Foundation (DMR-0213706) and the Department of Energy (DE-FG02-04ER46165). P.M. acknowledge the PhD scholarship from the French Minist{\`e}re de l{\textquoteright}Education Nationale. We thank Dr. Anne Anthore (MPQ, Universit{\'e} Paris Diderot) for providing the patterned Si substrates and Mr M. Shafique for his help in AFM measurements.",

year = "2008",

month = aug,

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

language = "English (US)",

volume = "9",

pages = "419--424",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier",

number = "4",

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TY - JOUR

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

N1 - Funding Information: Work at Princeton University was supported by the National Science Foundation (DMR-0408589), the Princeton MRSEC of the National Science Foundation (DMR-0213706) and the Department of Energy (DE-FG02-04ER46165). P.M. acknowledge the PhD scholarship from the French Ministère de l’Education Nationale. We thank Dr. Anne Anthore (MPQ, Université Paris Diderot) for providing the patterned Si substrates and Mr M. Shafique for his help in AFM measurements.

PY - 2008/8

Y1 - 2008/8

N2 - 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.

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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DO - 10.1016/j.orgel.2008.01.004

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SN - 1566-1199

VL - 9

SP - 419

EP - 424

JO - Organic Electronics

JF - Organic Electronics

IS - 4

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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