Bromination of graphene: a new route to making high performance transparent conducting electrodes with low optical losses

Handle URI:
http://hdl.handle.net/10754/617310
Title:
Bromination of graphene: a new route to making high performance transparent conducting electrodes with low optical losses
Authors:
Mansour, Ahmed ( 0000-0002-3411-6808 ) ; Amassian, Aram ( 0000-0002-5734-1194 ) ; Tanielian, Minas H.
Abstract:
The high optical transmittance, electrical conductivity, flexibility and chemical stability of graphene have triggered great interest in its application as a transparent conducting electrode material and as a potential replacement for indium doped tin oxide. However, currently available large scale production methods such as chemical vapor deposition produce polycrystalline graphene, and require additional transfer process which further introduces defects and impurities resulting in a significant increase in its sheet resistance. Doping of graphene with foreign atoms has been a popular route for reducing its sheet resistance which typically comes at a significant loss in optical transmission. Herein, we report the successful bromine doping of graphene resulting in air-stable transparent conducting electrodes with up to 80% reduction of sheet resistance reaching ~180 Ω/ at the cost of 2-3% loss of optical transmission in case of few layer graphene and 0.8% in case of single layer graphene. The remarkably low tradeoff in optical transparency leads to the highest enhancements in figure of merit reported thus far. Furthermore, our results show a controlled increase in the workfunction up to 0.3 eV with the bromine content. These results should help pave the way for further development of graphene as potentially a highly transparent substitute to other transparent conducting electrodes in optoelectronic devices.
KAUST Department:
Materials Science and Engineering (MSE); Physical Sciences and Engineering (PSE) Division
Citation:
Ahmed E. Mansour ; Aram Amassian and Minas H. Tanielian " Bromination of graphene: a new route to making high performance transparent conducting electrodes with low optical losses (Presentation Recording) ", Proc. SPIE 9552, Carbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices VIII, 95520A (September 3, 2015)
Publisher:
SPIE-Intl Soc Optical Eng
Journal:
Carbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices VIII
Conference/Event name:
Carbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices VIII
Issue Date:
3-Sep-2015
DOI:
10.1117/12.2187273
Type:
Presentation
Additional Links:
http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2187273; http://bcove.me/deoee11c
Appears in Collections:
Presentations

Full metadata record

DC FieldValue Language
dc.contributor.authorMansour, Ahmeden
dc.contributor.authorAmassian, Aramen
dc.contributor.authorTanielian, Minas H.en
dc.date.accessioned2016-07-21T10:42:33Z-
dc.date.available2016-07-21T10:42:33Z-
dc.date.issued2015-09-03-
dc.identifier.citationAhmed E. Mansour ; Aram Amassian and Minas H. Tanielian " Bromination of graphene: a new route to making high performance transparent conducting electrodes with low optical losses (Presentation Recording) ", Proc. SPIE 9552, Carbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices VIII, 95520A (September 3, 2015)en
dc.identifier.doi10.1117/12.2187273-
dc.identifier.urihttp://hdl.handle.net/10754/617310-
dc.description.abstractThe high optical transmittance, electrical conductivity, flexibility and chemical stability of graphene have triggered great interest in its application as a transparent conducting electrode material and as a potential replacement for indium doped tin oxide. However, currently available large scale production methods such as chemical vapor deposition produce polycrystalline graphene, and require additional transfer process which further introduces defects and impurities resulting in a significant increase in its sheet resistance. Doping of graphene with foreign atoms has been a popular route for reducing its sheet resistance which typically comes at a significant loss in optical transmission. Herein, we report the successful bromine doping of graphene resulting in air-stable transparent conducting electrodes with up to 80% reduction of sheet resistance reaching ~180 Ω/ at the cost of 2-3% loss of optical transmission in case of few layer graphene and 0.8% in case of single layer graphene. The remarkably low tradeoff in optical transparency leads to the highest enhancements in figure of merit reported thus far. Furthermore, our results show a controlled increase in the workfunction up to 0.3 eV with the bromine content. These results should help pave the way for further development of graphene as potentially a highly transparent substitute to other transparent conducting electrodes in optoelectronic devices.en
dc.publisherSPIE-Intl Soc Optical Engen
dc.relation.urlhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2187273en
dc.relation.urlhttp://bcove.me/deoee11cen
dc.titleBromination of graphene: a new route to making high performance transparent conducting electrodes with low optical lossesen
dc.typePresentationen
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalCarbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices VIIIen
dc.conference.dateAugust 09, 2015en
dc.conference.nameCarbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices VIIIen
dc.conference.locationSan Diego, California, United Statesen
dc.contributor.institutionBoeing Research and Technology (United States)en
kaust.authorMansour, Ahmeden
kaust.authorAmassian, Aramen
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