Analysis of transparent conductive silver nanowire films from dip coating flow

Abstract

Silver nanowires are a promising nanomaterial for the fabrication of transparent flexible conductive films. Due to their fascinating properties, numerous studies have been done to determine the relationship among nanowire properties, micro-network structure, and opto-electronic properties, such as transparency and conductivity. 1,2 However, most previous studies have used methods that are not suitable for mass production, such as vacuum filtration. To produce the film economically, it is advisable to use a solution process, e.g., a liquid coating method. In this study, we use a simple dip coating method to produce the film using a coating solution, which disperses nanowires in isopropyl alcohol. The amount of nanowires on the film is carefully controlled by the wet film thickness predicted from computational analysis. The important parameters of nanowire networks, such as the diameter, the aspect ratio, and the areal coverage of nanowires are measured directly from image analysis of the electron microscopy images. Finally, the relationship among those parameters and opto-electronic properties is examined in detail.

Interdependence of Resistance and Optical Transmission in Conductive Nanowire Networks

“…A semi-empirical extension of this exponential dependency is provided by Large et al [8] We note also that Bergin et al, [2] Ahn et al, [9] and Khanarian et al [7] all show a linear decrease of transmittance, T, on the fraction of the network covered by nanowires. A semi-empirical extension of this exponential dependency is provided by Large et al [8] We note also that Bergin et al, [2] Ahn et al, [9] and Khanarian et al [7] all show a linear decrease of transmittance, T, on the fraction of the network covered by nanowires.…”

Quantum plasmonic N00N state in a silver nanowire and its use for quantum sensing

“…A polarization-dependent phase shift, yielding the relative phase, could be obtained in the nanowire using a ligand coating [46,47] or active coating [48] along one of the axes that interacts with a substance whose concentration is being sensed. Such a coating can be achieved via a full coating [48][49][50][51] and then nanoshaving [52,53], or directly via nanografting [53,54]. One aspect that has been often investigated for quantum sensing is super-resolution [55].…”

Copper Nanowires and Their Applications for Flexible, Transparent Conducting Films: A Review

“…The transmittance of the film is calculated by T (%) = 100 – a × AF where T is the transmittance of the film in %, the fitting parameter a accounts for the diameter and wavelength-dependent optical properties of the NWs, and AF is the area fraction of the NW films given by Equation (3). The fitted plots with Equation (4) are shown in Figure 2 a with a = 87 and a = 61, which correspond to the diameters of 51 nm and 30 nm of Ag NWs, respectively [ 43 ]. The plots indicate that the transmittance of NW films increases with decreasing NW diameter and area coverage.…”

“…Different L/D in AgNW1 and AgNW2 lead to different trends in both T and R s . (Reproduced with permission from [ 43 ]. Copyright Springer Science + Business Media on behalf of the American Coatings Association and the Oil and Colour Chemist Association, 2015); ( b ) Transmittance (550 nm) plotted as a function of sheet resistance ( R s ) for thin films prepared from four nanostructured materials, graphene, single-walled carbon-based nanomaterials, Ag nanowires (NWs) and Ag flakes.…”