Fine-tuning of the metal work function by molecular doping

Jin He; Lior Iagher; Lioz Etgar; David Avnir

doi:10.1039/c8cc01637b

Fine-tuning of the metal work function by molecular doping

Jin He, Lior Iagher, Lioz Etgar, David Avnir^*

^*Corresponding author for this work

Institute of Chemistry

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

10 Scopus citations

Abstract

A new approach for fine tuning of the metal work function (WF) in the range of 1 eV is described. WF control is achieved by 3D molecular doping of the metal rather than the classical 2D adsorption. Both small molecules (Congo red, thionine) and polymers (Nafion, poly(vinylbenzyltrimethylammonium)chloride) were shown to affect the work function of gold and silver. The in situ reaction of the dopants within the metallic matrix is a further tool for altering the WF, confirming that this effect is dopant-dependent. We attribute this effect to the charge transfer interactions between the dopant molecule and the surrounding 3D metallic cage.

Original language	American English
Pages (from-to)	7203-7206
Number of pages	4
Journal	Chemical Communications
Volume	54
Issue number	52
DOIs	https://doi.org/10.1039/c8cc01637b
State	Published - 2018

Bibliographical note

Funding Information:
This work was supported by the Israel Ministry of Science, Technology and Space under the National Program for Applied Science, 2016 (grant no. 3-12948), and by the Israel Science Foundation (grant no. 703/12).

Publisher Copyright:
© The Royal Society of Chemistry 2018.

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title = "Fine-tuning of the metal work function by molecular doping",

abstract = "A new approach for fine tuning of the metal work function (WF) in the range of 1 eV is described. WF control is achieved by 3D molecular doping of the metal rather than the classical 2D adsorption. Both small molecules (Congo red, thionine) and polymers (Nafion, poly(vinylbenzyltrimethylammonium)chloride) were shown to affect the work function of gold and silver. The in situ reaction of the dopants within the metallic matrix is a further tool for altering the WF, confirming that this effect is dopant-dependent. We attribute this effect to the charge transfer interactions between the dopant molecule and the surrounding 3D metallic cage.",

author = "Jin He and Lior Iagher and Lioz Etgar and David Avnir",

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AU - He, Jin

AU - Iagher, Lior

AU - Etgar, Lioz

AU - Avnir, David

N1 - Funding Information: This work was supported by the Israel Ministry of Science, Technology and Space under the National Program for Applied Science, 2016 (grant no. 3-12948), and by the Israel Science Foundation (grant no. 703/12). Publisher Copyright: © The Royal Society of Chemistry 2018.

PY - 2018

Y1 - 2018

N2 - A new approach for fine tuning of the metal work function (WF) in the range of 1 eV is described. WF control is achieved by 3D molecular doping of the metal rather than the classical 2D adsorption. Both small molecules (Congo red, thionine) and polymers (Nafion, poly(vinylbenzyltrimethylammonium)chloride) were shown to affect the work function of gold and silver. The in situ reaction of the dopants within the metallic matrix is a further tool for altering the WF, confirming that this effect is dopant-dependent. We attribute this effect to the charge transfer interactions between the dopant molecule and the surrounding 3D metallic cage.

AB - A new approach for fine tuning of the metal work function (WF) in the range of 1 eV is described. WF control is achieved by 3D molecular doping of the metal rather than the classical 2D adsorption. Both small molecules (Congo red, thionine) and polymers (Nafion, poly(vinylbenzyltrimethylammonium)chloride) were shown to affect the work function of gold and silver. The in situ reaction of the dopants within the metallic matrix is a further tool for altering the WF, confirming that this effect is dopant-dependent. We attribute this effect to the charge transfer interactions between the dopant molecule and the surrounding 3D metallic cage.

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JO - Chemical Communications

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ER -

Fine-tuning of the metal work function by molecular doping

Abstract

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