Graphene-Based PDLC Device Enabled by Water-Induced Interface Cleaning Process

Eun Mi Kim; Su Jin Kim; Go Bong Choi; Jaegeun Lee; Min Mo Koo; Jaewoong Kim; Young Won Kim; Jongho Lee; Jin Hyeok Kim; Tae Hoon Seo

doi:10.20944/preprints202307.1434.v1

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preprints.org > chemistry and materials science > surfaces, coatings and films > doi: 10.20944/preprints202307.1434.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Graphene-Based PDLC Device Enabled by Water-Induced Interface Cleaning Process

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Version 1 : Received: 20 July 2023 / Approved: 20 July 2023 / Online: 20 July 2023 (11:51:23 CEST)

A peer-reviewed article of this Preprint also exists.

Kim, E.M.; Kim, S.J.; Choi, G.B.; Lee, J.; Koo, M.M.; Kim, J.; Kim, Y.W.; Lee, J.; Kim, J.H.; Seo, T.H. A Graphene-Based Polymer-Dispersed Liquid Crystal Device Enabled through a Water-Induced Interface Cleaning Process. Nanomaterials 2023, 13, 2309. Kim, E.M.; Kim, S.J.; Choi, G.B.; Lee, J.; Koo, M.M.; Kim, J.; Kim, Y.W.; Lee, J.; Kim, J.H.; Seo, T.H. A Graphene-Based Polymer-Dispersed Liquid Crystal Device Enabled through a Water-Induced Interface Cleaning Process. Nanomaterials 2023, 13, 2309.

Abstract

We report the use of four-layer graphene (4LG) as a highly reliable transparent conductive electrode (TCE) for polymer-dispersed liquid crystal (PDLC)-based smart window devices. The adhesion between 4LG and the substrate was successfully improved through a water-induced interface-cleaning (WIIC) process. We compared the performance of a device with a WIIC-processed 4LG electrode with that of devices with a conventional Indium tin oxide (ITO) electrode and a 4LG electrode without a WIIC. With the application of the WIIC process, the PDLC smart window with a 4LG electrode exhibited reduced turn-on voltage and haze compared to 4LG without the WIIC process and characteristics comparable to those of the ITO electrode. Based on our observations, we conclude that 4LG with WIIC is a promising TCE for flexible smart windows.

Keywords

four layer graphene; polymer dispersed liquid crystal; smart window; water induced interface cleaning; adhesion

Subject

Chemistry and Materials Science, Surfaces, Coatings and Films

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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