Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 15, Issue 3, Pages 2317-2323Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2015.9493
Keywords
Selective Laser Ablation; Metal Nanowire; Percolation Network; Transparent Conductor; Capacitive Touch Sensor
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Funding
- National Research Foundation of Korea (NRF) [2012-0008779]
- Global Frontier R&D Program on Center for Multiscale Energy System - Ministry of Science, ICT and Future [2012-054172]
- R&D Convergence Program
- ISTK (Korea Research Council for Industrial Science and Technology) [B551179-10-01-00]
- Seoul National University, Institute of Advanced Machinery and Design (SNU-IAMD)
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We introduce a facile method to enhance the functionality of a patterned metallic transparent conductor through selective laser ablation of metal nanowire percolation network. By scanning focused nanosecond pulsed laser on silver nanowire percolation network, silver nanowires are selectively ablated and patterned without using any conventional chemical etching or photolithography steps. Various arbitrary patterns of silver nanowire transparent conductors are readily created on the percolation network by changing various laser parameters such as repetition rate and power. The macroscopic optical and electrical properties of the percolation network transparent conductor can be easily tuned by changing the conductor pattern design via digital selective laser ablation. Further investigation on the silver nanowire based electrode line prepared by the ablation process substantiates that the general relation for a conducting thin film fails at a narrow width, which should be considered for the applications that requires a high resolution patterns. Finally, as a proof of concept, a capacitive touch sensor with diamond patterns has been demonstrated by selective laser ablation of metal nanowire percolation network.
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