Organic planar diode with Cu electrode via modification of the metal surface by SAM of fluorobiphenyl based thiol

Swarup Biswas; Philippe Decorse; Hyeok Kim; Philippe Lang

doi:10.1016/j.apsusc.2021.149794

Organic planar diode with Cu electrode via modification of the metal surface by SAM of fluorobiphenyl based thiol

Swarup Biswas, Philippe Decorse, Hyeok Kim, Philippe Lang

School of Electrical and Computer Engineering

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

3 Scopus citations

Abstract

The surface of a copper (Cu) electrode is modified by the combination of preliminary oxidative treatment and grafting of a bifunctional self-assembled monolayer based on fluorobiphenylthiol (FBPS) or biphenylthiol (BPS). In these conditions, a dinaphtho [2, 3-b: 2′,3′-f] thieno [3,2–b] thiophene (DNTT)-based diode exhibits high mobility (0.35 cm².V⁻¹.s⁻¹) due to the formation of organized assembly of FBPS on the oxide Cu that has been partially reduced in Cu₂O; this organization controls that of the semiconductor film. On the other hand, the same treatment of Cu electrode with BPS molecules does not function, due to the disorganization of both the BPS SAM and the DNTT film. These results suggest that a monolayer of dipolar-oriented molecules lowers the injection barrier; steers the semiconductor organization and thereby enhances the performance of the derived electronic component.

Original language	English
Article number	149794
Journal	Applied Surface Science
Volume	558
DOIs	https://doi.org/10.1016/j.apsusc.2021.149794
State	Published - 30 Aug 2021

Keywords

Biphenyl thiol
Contact resistance
Copper
Metal–semiconductor interface
Organic diode
Self-assembled monolayers

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10.1016/j.apsusc.2021.149794

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@article{b4cd00ddc2354938a1782f934bd452b8,

title = "Organic planar diode with Cu electrode via modification of the metal surface by SAM of fluorobiphenyl based thiol",

abstract = "The surface of a copper (Cu) electrode is modified by the combination of preliminary oxidative treatment and grafting of a bifunctional self-assembled monolayer based on fluorobiphenylthiol (FBPS) or biphenylthiol (BPS). In these conditions, a dinaphtho [2, 3-b: 2′,3′-f] thieno [3,2–b] thiophene (DNTT)-based diode exhibits high mobility (0.35 cm2.V−1.s−1) due to the formation of organized assembly of FBPS on the oxide Cu that has been partially reduced in Cu2O; this organization controls that of the semiconductor film. On the other hand, the same treatment of Cu electrode with BPS molecules does not function, due to the disorganization of both the BPS SAM and the DNTT film. These results suggest that a monolayer of dipolar-oriented molecules lowers the injection barrier; steers the semiconductor organization and thereby enhances the performance of the derived electronic component.",

keywords = "Biphenyl thiol, Contact resistance, Copper, Metal–semiconductor interface, Organic diode, Self-assembled monolayers",

author = "Swarup Biswas and Philippe Decorse and Hyeok Kim and Philippe Lang",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = aug,

day = "30",

doi = "10.1016/j.apsusc.2021.149794",

language = "English",

volume = "558",

journal = "Applied Surface Science",

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TY - JOUR

T1 - Organic planar diode with Cu electrode via modification of the metal surface by SAM of fluorobiphenyl based thiol

AU - Biswas, Swarup

AU - Decorse, Philippe

AU - Kim, Hyeok

AU - Lang, Philippe

PY - 2021/8/30

Y1 - 2021/8/30

N2 - The surface of a copper (Cu) electrode is modified by the combination of preliminary oxidative treatment and grafting of a bifunctional self-assembled monolayer based on fluorobiphenylthiol (FBPS) or biphenylthiol (BPS). In these conditions, a dinaphtho [2, 3-b: 2′,3′-f] thieno [3,2–b] thiophene (DNTT)-based diode exhibits high mobility (0.35 cm2.V−1.s−1) due to the formation of organized assembly of FBPS on the oxide Cu that has been partially reduced in Cu2O; this organization controls that of the semiconductor film. On the other hand, the same treatment of Cu electrode with BPS molecules does not function, due to the disorganization of both the BPS SAM and the DNTT film. These results suggest that a monolayer of dipolar-oriented molecules lowers the injection barrier; steers the semiconductor organization and thereby enhances the performance of the derived electronic component.

AB - The surface of a copper (Cu) electrode is modified by the combination of preliminary oxidative treatment and grafting of a bifunctional self-assembled monolayer based on fluorobiphenylthiol (FBPS) or biphenylthiol (BPS). In these conditions, a dinaphtho [2, 3-b: 2′,3′-f] thieno [3,2–b] thiophene (DNTT)-based diode exhibits high mobility (0.35 cm2.V−1.s−1) due to the formation of organized assembly of FBPS on the oxide Cu that has been partially reduced in Cu2O; this organization controls that of the semiconductor film. On the other hand, the same treatment of Cu electrode with BPS molecules does not function, due to the disorganization of both the BPS SAM and the DNTT film. These results suggest that a monolayer of dipolar-oriented molecules lowers the injection barrier; steers the semiconductor organization and thereby enhances the performance of the derived electronic component.

KW - Biphenyl thiol

KW - Contact resistance

KW - Copper

KW - Metal–semiconductor interface

KW - Organic diode

KW - Self-assembled monolayers

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U2 - 10.1016/j.apsusc.2021.149794

DO - 10.1016/j.apsusc.2021.149794

M3 - Article

AN - SCOPUS:85104944705

SN - 0169-4332

VL - 558

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 149794

ER -

Organic planar diode with Cu electrode via modification of the metal surface by SAM of fluorobiphenyl based thiol

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Keywords

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