Resistance of Single Ag Nanowire Junctions and Their Role in the Conductivity of Nanowire Networks

Abstract

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 optimising the material conductivity, which up to now has largely focused on minimising 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 optimised 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 themselves through standard processing techniques. We

Electrical, mechanical and thermal properties of aligned silver nanowire/polylactide nanocomposite films

“…It should be noted that our system is junction limited. For Ag NWs, Bellew et al, measured a junction resistance of 500 U, which is a lot higher than the individual nanowire resistance [48]. It is thus clear that the conductivity of network of Ag NWs would be junction resistance dominated.…”

Recent Developments and Perspectives for Memristive Devices Based on Metal Oxide Nanowires

“…[275][276][277][278][279][280][281][282][283] In the following, resistive switching in stacked and planar devices based on NW networks is described. Resistive switching networks based on random ordered nanowires, dendritic, and fractal structures have attracted great attention because of the peculiar conduction properties that make these structures promising for resistive switching and neuromorphic applications.…”

“…[275,277,[280][281][282][283] Thus, the global resistive switching behavior of the network arises from resistive switching events located at the numerous wire interconnections. Indeed, the NW network global properties arise from junctions between individual wires that determine the network connectivity.…”

Nanomaterial-based stretchable and transparent electrodes

“…The welding of AgNWs greatly improves the electrical and mechanical properties of AgNW-based stretchable transparent electrodes. In addition to chemical welding, various approaches have been reported to reducing the inter-nanowire contact resistance, including thermal annealing, mechanical pressing, and plasmonic welding [24][25][26][27]. For example, Cui et al exploited the galvanic displacement of Ag and Au to turn a network of pristine AgNWs into a network of Ag-Au alloyed nanowires with decreased junction resistance [26].…”