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Polymer-dispersed liquid crystal devices with graphene electrodes

Title
Polymer-dispersed liquid crystal devices with graphene electrodes
Authors
Chung, SH[Chung, Seok-Hwan]Noh, HY[Noh, Hee Yeon]
DGIST Authors
Chung, SH[Chung, Seok-Hwan]; Noh, HY[Noh, Hee Yeon]
Issue Date
2015-12-14
Citation
Optics Express, 23(25), 32149-32157
Type
Article
Article Type
Article
Keywords
Chemical FormulationElectrodesGrapheneGraphene DevicesGraphene ElectrodesGraphite ElectrodesIndium Tin Oxide ElectrodesLarge-Area GrapheneLiquid Crystal DisplaysLiquid CrystalsPolymer Dispersed Liquid Crystal DevicesPolymerization ProcessStandard Operating ConditionsTin OxidesTransparent Substrate
ISSN
1094-4087
Abstract
Although polymer-dispersed liquid crystal (PDLC) devices have considerable potential application in smart windows, the high material cost of the indium tin oxide (ITO) electrodes conventionally used in these devices hinders their wide usage. In this work, we explore the use of graphene electrodes as a potential substitute for ITO electrodes in PDLC devices. The fabricated PDLC devices with graphene electrodes exhibit higher contrast and faster response than PDLC devices with ITO electrodes fabricated using the same chemical formulation and polymerization process. However, they also exhibit higher operation voltage and haze, which is primarily attributed to the inherently large resistance and inhomogeneity of the large-area graphene sheets initially transferred onto the transparent substrates. PDLC devices with graphene electrodes are robust under standard operating conditions and also have the advantage of flexibility and stretchability, unlike PDLCs with ITO electrodes. © 2015 Optical Society of America.
URI
http://hdl.handle.net/20.500.11750/2797
DOI
10.1364/OE.23.032149
Publisher
OSA - The Optical Society
Related Researcher
Files:
There are no files associated with this item.
Collection:
Magnetic-Controlled Materials Research Group1. Journal Articles


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