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Nano Research

Article Title

Fabrication of sintering-free flexible copper nanowire/polymer composite transparent electrodes with enhanced chemical and mechanical stability

Keywords

copper nanowires, nanowire/polymercomposite, transparent electrode, chemical stability, mechanical stability

Abstract

The thermal decomposition synthesis of long copper nanowires (CuNWs) wasachieved by controlling the synthesis parameters. A detailed study wasperformed to determine the effect of the molar ratio of copper chloride to nickelacetylacetonate, temperature, and stirring rate on the final shape of theproducts. Transparent electrodes (TEs) were fabricated by wet treatment withacetic acid (AA), without using a sintering process. The low oxidation stabilityand high surface roughness are the main disadvantages of the CuNW TEs,which limit their applications. In order to overcome these issues, we preparedCuNW/polymer composite TEs by partial embedding of the CuNWs intopoly(methyl methacrylate) (PMMA) on poly(ethylene terephthalate) (PET)substrates. The CuNW/PMMA composite TEs exhibit excellent optoelectronicperformance (91.3% at 100.7 Ω/sq), low surface roughness (4.6 nm in height),and good mechanical and chemical stability as compared with CuNW TEs. Onthe basis of these properties, we believe that CuNW-based composite TEs couldserve as low-cost materials for a wide range of new optoelectronic devices.

Graphical Abstract

Publisher

Tsinghua University Press

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