NDLI: Is graphene a good transparent electrode for photovoltaics and display applications?

Content Provider	IET Digital Library
Author	Bointon, Thomas H. Russo, Saverio Craciun, Monica Felicia
Abstract	The current standard material used for transparent electrodes in displays, touch screens and solar cells is indium tin oxide (ITO) which has low sheet resistance (10 Ω/□), high optical transmission in the visible wavelength (85%) and does not suffer of optical haze. However, ITO is mechanically rigid and incompatible with future demands for flexible applications. Graphene materials share many of the properties desirable for flexible transparent conductors, including high optical transparency, high mechanical flexibility and strength. Whilst pristine graphene is not a good transparent conductor, functionalised graphene is at least 1000 times a better conductor than its pristine counterpart and it outperforms ITO. Here the authors review recent work on a novel graphene-based conductor with sheet resistance as low as 8.8 Ω/□ and 84% optical transmission. This material is obtained by ferric chloride (FeCl3) intercalation into few-layer-graphene (FLG), giving rise to a new system which is the best known flexible and transparent electricity conductor. FeCl3-FLG shows no significant changes in the electrical and structural properties for a long exposure to air, to high levels of humidity and at temperatures of up to 150°C in atmosphere. These properties position FeCl3-FLG as a viable and attractive replacement to ITO.
Starting Page	403
Ending Page	412
Page Count	10
ISSN	1751858X
Volume Number	9
e-ISSN	17518598
Issue Number	Issue 6, Nov (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cds/9/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cds.2015.0121
Journal	IET Circuits, Devices & Systems
Publisher	The Institution of Engineering and Technology
Access Restriction	Open
Rights License	Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Subject Keyword	Conductors Conductors (electric) Current Standard Material Display Application Display Device Display Technology Electrical Property Electrode Ferric Chloride Flexible Material Flexible Transparent Conductor Fullerene Functionalised Graphene Graphene Device Graphene-based Conductor Indium Compound Indium Tin Oxide ITO Mechanical Flexibility Mechanical Strength Nanotube And Related Device Optical Transmission Optical Transparency Photoelectric Device Photovoltaic Cell Photovoltaics Application Sheet Resistance Solar Cell And Array Structural Property Touch Screens Transparent Electrode Transparent Material Visible Spectra Visible Wavelength
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering

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