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    Simultaneous Enhancement of Electrical and Optical Properties of Transparent Conducting RuO(2)Nanosheet films by Facile Ultraviolet-Ozone Irradiation

    Year: 2020

    Journal: Appl. Sci.-Basel, Volume 10, JUN

    Authors: Roh, JW; Shin, WH; Kim, HS; Kim, SY; Kim, SI

    Organizations: Korea Institute of Energy Technology Evaluation and Planning (KETEP); Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20193091010110]; National Research Foundation of Korea (NRF)National Research Foundation of Korea [NRF-2019R1C1C1005254]; Hongik University

    Keywords: nanosheets; RuO2; transparent electrodes; ultraviolet-ozone irradiation; sheet resistance; optical transmittance

    The enhancement of electrical and optical properties in transparent conducting electrodes has attracted significant interest for their application in flexible electronic devices. Herein, a method for the fabrication of transparent conducting films is proposed. In this approach, RuO(2)nanosheets are synthesized by a simple chemical exfoliation method and deposited as conducting films by repeated Langmuir-Blodgett coating. For enhancing the electrical and optical properties of the films, ultraviolet-ozone irradiation is applied between the repeated coatings for the removal of residual organic materials from the chemically exfoliated nanosheets. We observe that by applying ultraviolet-ozone irradiation for 30 min, the sheet resistance of the films decreases by 10% and the optical transmittance is simultaneously enhanced. Facile ultraviolet-ozone irradiation is shown to be an effective and industrially friendly method for enhancing the electrical and optical properties of oxide nanosheets for their application as transparent conduction electrodes.
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