Resistance of Single Ag Nanowire Junctions and Their Role in the Conductivity of Nanowire Networks
| Autor: | Allen T. Bellew, Claudia Gomes da Rocha, John J. Boland, Hugh G. Manning, Mauro S. Ferreira |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Electrode material
Materials science business.industry General Engineering Nanowire General Physics and Astronomy Nanotechnology 02 engineering and technology Conductivity Silver nanowires 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Conductor Indium tin oxide Optoelectronics General Materials Science Network performance 0210 nano-technology business Sheet resistance |
| Zdroj: | ACS Nano. 9:11422-11429 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/acsnano.5b05469 |
| Popis: | Networks of silver nanowires appear set to replace expensive indium tin oxide as the transparent conducting electrode material in next generation devices. The success of this approach depends on optimizing the material conductivity, which until now has largely focused on minimizing the junction resistance between wires. However, there have been no detailed reports on what the junction resistance is, nor is there a known benchmark for the minimum attainable sheet resistance of an optimized network. In this paper, we present junction resistance measurements of individual silver nanowire junctions, producing for the first time a distribution of junction resistance values and conclusively demonstrating that the junction contribution to the overall resistance can be reduced beyond that of the wires through standard processing techniques. We find that this distribution shows the presence of a small percentage (6%) of high-resistance junctions, and we show how these may impact the performance of network-based materials. Finally, through combining experiment with a rigorous model, we demonstrate the important role played by the network skeleton and the specific connectivity of the network in determining network performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|