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Characteristics of a Flexible Transparent Electrode based on a Silver Nanowire-polymer Composite Material with a Mesh Pattern Formed without Lithography  

Park, Tae Gon (Dept. of Electronic Engineering, Hanyang University)
Park, Jong Seol (Dept. of Electronic Engineering, Hanyang University)
Park, Jin Seok (Dept. of Electronic Engineering, Hanyang University)
Publication Information
Journal of the Semiconductor & Display Technology / v.19, no.4, 2020 , pp. 11-17 More about this Journal
Abstract
In this study, a new method for fabricating flexible transparent electrodes based on silver nanowire-polymer (AgNW-PEDOT:PSS) composite materials having a mesh pattern formed by a solution-based process without lithography was proposed. By optimizing conditions such as the amount of ultraviolet (UV) photosensitizer injected into the suspension of AgNW and PEDOT:PSS, UV exposure time, and deionized (DI) washing time, a clear and uniform mesh pattern was obtained. For the fabricated AgNW-PEDOT:PSS-based mesh-type electrodes, characteristics such as electrical sheet resistance, light transmittance, haze, and bending flexibility were analyzed according to the mixing ratio of AgNW and PEDOT:PSS included in the suspension. The fabricated mesh electrodes typically exhibited a low electrical sheet resistance of less than 20 Ω/sq while maintaining a high transmittance of 80% or more. In addition, it was confirmed from the results of analyzing the effect of PEDOT:PSS on the characteristics of the mesh-type AgNW-PEDOT electrode that the optical visibility was greatly enhanced by reducing the surface roughness and haze, and the bending flexibility was remarkably improved.
Keywords
Silver Nanowire; PEDOT:PSS; Transparent Electrode; Lithography-free Mesh Formation; Haze; Flexibility;
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