Fine-tuning of the metal work function by molecular doping

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-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 languageAmerican English
Pages (from-to)7203-7206
Number of pages4
JournalChemical Communications
Volume54
Issue number52
DOIs
StatePublished - 2018

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2018.

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