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Characteristics of Hybrid-type Transparent Electrodes Fabricated by Coating Carbon Nanotubes with Conductive Polymers  

Park, Jin-Seok (Dept. of Electronic Engineering, Hanyang University)
Park, Jong-Seol (Dept. of Electronic Engineering, Hanyang University)
Kim, Bu-Jong (Dept. of Electronic Engineering, Hanyang University)
Publication Information
Journal of the Semiconductor & Display Technology / v.18, no.3, 2019 , pp. 36-41 More about this Journal
Abstract
Hybrid-type transparent electrodes were fabricated by depositing carbon nanotubes (CNTs) via spray coating on polyethylene terephthalate (PET) substrates and then coating the CNTs with [poly(3,4-ethylenedioxythiophene)] (PEDOT) films via electro-polymerization. For all of the fabricated electrodes, their surface morphologies, electric sheet resistances, visible transmittances, and color properties (e.g., yellowness) were characterized as functions of the applied voltages and process times used in electro-polymerization. The sheet resistance of the CNTs was significantly reduced by the coating of PEDOT, while their visible transmittances slightly decreased. The yellowness values of the PEDOT-coated CNTs were observed to have substantially decreased via electro-polymerization. The experimental results confirmed that the fabricated hybrid electrodes had desirable properties for the application of transparent electrode in terms of the electrical resistance, optical transmittance, and chromaticity.
Keywords
CNT; PEDOT; PET Substrate; Electro-polymerization; Sheet Resistance; Transmittance; Chromaticity;
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