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.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
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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U2 - 10.1016/j.orgel.2008.01.004
DO - 10.1016/j.orgel.2008.01.004
M3 - Article
AN - SCOPUS:43849103446
VL - 9
SP - 419
EP - 424
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
SN - 1566-1199
IS - 4
ER -