Length-dependent electro-optical properties of silver nanowires-based transparent conducting films

In this paper, silver nanowires (AgNWs) with mean diameters of 65 nm and mean length of 9.8 µm were synthesized by the polyol solvothermal method. Sonication-induced scission was used to obtain AgNWs with a length range of 7.1–3.3 µm, and further AgNWs solutions were prepared with as-synthesized AgN...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2019-04, Vol.30 (7), p.6838-6845
Main Authors: Yang, X., Du, D. X., Wang, Y. H.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cleavage
Contact resistance
Density
Electrical resistivity
Ethanol
Fillers
Glass substrates
Materials Science
Nanowires
Networks
Optical and Electronic Materials
Optical properties
Photoelectric effect
Photoelectricity
Synthesis
Transmittance
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Summary:In this paper, silver nanowires (AgNWs) with mean diameters of 65 nm and mean length of 9.8 µm were synthesized by the polyol solvothermal method. Sonication-induced scission was used to obtain AgNWs with a length range of 7.1–3.3 µm, and further AgNWs solutions were prepared with as-synthesized AgNWs as conductive fillers in the ethanol. A series of AgNWs random networks were prepared on the glass substrate using spray coating technique. Photoelectric properties and microstructure characterizations of AgNWs random networks were conducted to identify changes in such properties and the extent of these changes as a function of the length and content of AgNWs. The results show the sheet resistance and the transmittance of AgNWs network gradually increase as the length of AgNWs decrease. However, as the concentration of AgNWs increase, the sheet resistance and the transmittance of AgNWs networks decreases and increases, respectively. To obtain an approximative Rs of AgNWs film, the concentration of AgNWs with a length of 7.1 µm should be 1.2 times that of AgNWs with a length of 9.1 µm, with a 10% dropped transmittance. These results are attributed to the increase of the contact resistance among AgNWs networks and the density of AgNWs at the same area coverage. As the concentration of AgNWs increases, the deposition density of AgNWs networks increases, and both the sheet resistance and the transmittance decrease gradually.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-00996-9