Single electron transistor with a single conjugated molecule

Sergey Kubatkin; Andrey Danilov; Mattias Hjort; Jérôme Cornil; Jean Luc Brédas; Nicolai Stuhr-Hansen; Per Hedegård; Thomas Bjørnholm

doi:10.1016/j.cap.2004.01.018

Single electron transistor with a single conjugated molecule

Sergey Kubatkin^*, Andrey Danilov, Mattias Hjort, Jérôme Cornil, Jean Luc Brédas, Nicolai Stuhr-Hansen, Per Hedegård, Thomas Bjørnholm

^*Corresponding author for this work

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

25 Scopus citations

Abstract

We report on a single electron transistor (SET) where the electronic levels of a single π-conjugated molecule control the electron transport properties. The molecule can be in several distinct charged states from +3 to -4. The experiment closely resembles electrochemical measurements allowing us to report on quantitative measurements of the redox potentials (or ionization potentials) of a single molecule in a solid state device. The molecular excitation energies extracted from the SET measurements are strongly correlated with electrochemical data. In contrast, the HOMO-LUMO gap is strongly reduced in a solid state environment, as compared to solution. We suggest that this surprising effect may be caused by image charges generated in the source and drain electrodes. They will result in a strong localization of the charges on the molecule.

Original language	English (US)
Pages (from-to)	554-558
Number of pages	5
Journal	Current Applied Physics
Volume	4
Issue number	5
DOIs	https://doi.org/10.1016/j.cap.2004.01.018
State	Published - Aug 2004
Externally published	Yes

Keywords

Image charges
Molecular electronics
Redox states
Single electron tunneling

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy

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10.1016/j.cap.2004.01.018

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title = "Single electron transistor with a single conjugated molecule",

abstract = "We report on a single electron transistor (SET) where the electronic levels of a single π-conjugated molecule control the electron transport properties. The molecule can be in several distinct charged states from +3 to -4. The experiment closely resembles electrochemical measurements allowing us to report on quantitative measurements of the redox potentials (or ionization potentials) of a single molecule in a solid state device. The molecular excitation energies extracted from the SET measurements are strongly correlated with electrochemical data. In contrast, the HOMO-LUMO gap is strongly reduced in a solid state environment, as compared to solution. We suggest that this surprising effect may be caused by image charges generated in the source and drain electrodes. They will result in a strong localization of the charges on the molecule.",

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T1 - Single electron transistor with a single conjugated molecule

AU - Kubatkin, Sergey

AU - Danilov, Andrey

AU - Hjort, Mattias

AU - Cornil, Jérôme

AU - Brédas, Jean Luc

AU - Stuhr-Hansen, Nicolai

AU - Hedegård, Per

AU - Bjørnholm, Thomas

PY - 2004/8

Y1 - 2004/8

N2 - We report on a single electron transistor (SET) where the electronic levels of a single π-conjugated molecule control the electron transport properties. The molecule can be in several distinct charged states from +3 to -4. The experiment closely resembles electrochemical measurements allowing us to report on quantitative measurements of the redox potentials (or ionization potentials) of a single molecule in a solid state device. The molecular excitation energies extracted from the SET measurements are strongly correlated with electrochemical data. In contrast, the HOMO-LUMO gap is strongly reduced in a solid state environment, as compared to solution. We suggest that this surprising effect may be caused by image charges generated in the source and drain electrodes. They will result in a strong localization of the charges on the molecule.

AB - We report on a single electron transistor (SET) where the electronic levels of a single π-conjugated molecule control the electron transport properties. The molecule can be in several distinct charged states from +3 to -4. The experiment closely resembles electrochemical measurements allowing us to report on quantitative measurements of the redox potentials (or ionization potentials) of a single molecule in a solid state device. The molecular excitation energies extracted from the SET measurements are strongly correlated with electrochemical data. In contrast, the HOMO-LUMO gap is strongly reduced in a solid state environment, as compared to solution. We suggest that this surprising effect may be caused by image charges generated in the source and drain electrodes. They will result in a strong localization of the charges on the molecule.

KW - Image charges

KW - Molecular electronics

KW - Redox states

KW - Single electron tunneling

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U2 - 10.1016/j.cap.2004.01.018

DO - 10.1016/j.cap.2004.01.018

M3 - Article

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VL - 4

SP - 554

EP - 558

JO - Current Applied Physics

JF - Current Applied Physics

IS - 5

ER -

Single electron transistor with a single conjugated molecule

Abstract

Keywords

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