Self-limited plasmonic welding of silver nanowire junctions

Erik C. Garnett, Wenshan Cai, Judy J. Cha, Fakhruddin Mahmood, Stephen T. Connor, M. Greyson Christoforo, Yi Cui, Michael D. McGehee, Mark L. Brongersma

Research output: Contribution to journalArticlepeer-review

871 Citations (SciVal)

Abstract

Nanoscience provides many strategies to construct high-performance materials and devices, including solar cells, thermoelectrics, sensors, transistors, and transparent electrodes. Bottom-up fabrication facilitates large-scale chemical synthesis without the need for patterning and etching processes that waste material and create surface defects. However, assembly and contacting procedures still require further development. Here, we demonstrate a light-induced plasmonic nanowelding technique to assemble metallic nanowires into large interconnected networks. The small gaps that form naturally at nanowire junctions enable effective light concentration and heating at the point where the wires need to be joined together. The extreme sensitivity of the heating efficiency on the junction geometry causes the welding process to self-limit when a physical connection between the wires is made. The localized nature of the heating prevents damage to low-thermal-budget substrates such as plastics and polymer solar cells. This work opens new avenues to control light, heat and mass transport at the nanoscale. © 2012 Macmillan Publishers Limited. All rights reserved.
Original languageEnglish (US)
Pages (from-to)241-249
Number of pages9
JournalNature Materials
Volume11
Issue number3
DOIs
StatePublished - Feb 5 2012

Fingerprint

Dive into the research topics of 'Self-limited plasmonic welding of silver nanowire junctions'. Together they form a unique fingerprint.

Cite this