Abstract
In this study, adhesion improved silver nanowires (AgNWs) conducting film was produced via the meniscus dragging deposition method. In order to improve adhesion of AgNWs films, the AgNWs were surface-modified with (3-aminopropyl)triethoxysilane (APTES) and coated over the pristine AgNWs networked film. Based on this strategy, the positively charged amine groups of the APTES-AgNWs and the negatively charged hydroxyl groups of the substrates formed electrostatic bonds, improving the adhesion between the AgNWs and substrates without sacrificing conductivity. AgNWs films on the rigid and flexible substrates were characterized using various analytical techniques. AgNWs networked film exhibited a sheet resistance of 6–22 Ω/sq at the transmittance at 550 nm, corresponding to 74–86% transmittance, confirming promising transparent electrodes. Adhesion of AgNWs film is confirmed based on a peel-off test and AgNWs film maintained a good conductivity even after several peel-off tests.
Highlights
Transparent conducting electrodes (TCEs) are important components of optoelectronic devices, such as organic light emitting diodes, organic solar cells, and touch screens [1]
It is evident from the figure that the APTES-Ag nanowires (AgNWs) exhibit a thicker and rougher capping layer of APTES compared to bare AgNWs, which are capped by a polyvinylpyrrolidone (PVP) layer
We fabricated AgNWs thin films strongly adhered on rigid and flexible (PE) substrates using the meniscus dragging deposition (MDD) coating technique
Summary
Transparent conducting electrodes (TCEs) are important components of optoelectronic devices, such as organic light emitting diodes, organic solar cells, and touch screens [1]. The rigidity and rarity of ITO limit its application in flexible devices [3] Overcoming these limitations is crucial for the advent of optoelectronic devices with innovative form factors. Various materials such as metallic nanowires [4], carbon nanotubes [5], metallic grids [6], graphene sheets [7], and conductive polymers [8] have been investigated to replace ITO in flexible optoelectronic devices. Ag nanowires (AgNWs) have emerged as a promising alternative to ITO as they possess optoelectrical properties comparable to those of ITO as well as excellent mechanical flexibility They are cost-effective and can be solution-processed. These facile and cost-effective solution processes have large-scale production efficiency comparable to that of ITO production methods
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