Please use this identifier to cite or link to this item: doi:10.22028/D291-28990
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Title: Ligand-Dependent Nanoparticle Assembly and Its Impact on the Printing of Transparent Electrodes
Author(s): Kister, Thomas
Maurer, Johannes H. M.
González-García, Lola
Kraus, Tobias
Language: English
Title: ACS applied materials & interfaces
Volume: 10
Issue: 7
Startpage: 6079
Endpage: 6083
Publisher/Platform: ACS
Year of Publication: 2018
Publikation type: Journal Article
Abstract: Metal grids with submicron line diameters are optically transparent, mechanically flexible, and suitable materials for transparent and flexible electronics. Printing such narrow lines with dilute metal nanoparticle inks is challenging because it requires percolation throughout the particle packing. Here, we print fully connected submicron lines of 3.2 nm diameter gold nanoparticles and vary the organic ligand shell to study the relation between colloidal interactions, ligand binding to the metal core, and conductivity of the printed lines. We find that particles with repulsive potentials aid the formation of continuous lines, but the required long ligand molecules impede conductivity and need to be removed after printing. Weakly bound alkylamines provided sufficient interparticle repulsion and were easy to remove with a soft plasma treatment after printing, so that grids with a transparencies above 90% and a conductivity of 150 Ω sq-1 could be printed.
DOI of the first publication: 10.1021/acsami.7b18579
URL of the first publication:
Link to this record: hdl:20.500.11880/27928
ISSN: 1944-8252
Date of registration: 27-Sep-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
Professorship: NT - Prof. Dr. Tobias Kraus
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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