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Efficient and thermally stable iodine doping of printed graphene nano-platelets
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.ORCID iD: 0000-0002-7825-9501
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
Linkoping Univ, Surface Phys & Chem, IFM, S-58183 Linkoping, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
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2017 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 117, 240-245 p.Article in journal (Refereed) Published
Abstract [en]

We report on an efficient and highly thermally stable doping with iodine on ink-jet printed graphene films. The films consist of pristine few-layer graphene nano-platelates (p-GNPs) that are randomly stacked. With iodine doping simply by soaking in aqueous iodine solution, the printed p-GNPs films are enhanced in electrical conductivity by up to around 2 times. The doping effect exhibits excellent thermal stability up to 500 degrees C under high vacuum condition (10(-6) mBar) evidenced by electrical and spectroscopic means. Furthermore, the doping of iodine leads to a slight increment of work function by 0.07 eV. Using depth profile measurements, it is found that iodine species diffuse deeply into the films and likely intercalate between two adjacent p-GNPs which interpret the aforementioned efficient enhancement and thermal stability of the doping effect. The reported doping scheme offers a viable low-temperature optimization method for conductive electrodes with p-GNPs in the application of printed devices.

Place, publisher, year, edition, pages
2017. Vol. 117, 240-245 p.
National Category
Materials Chemistry Other Physics Topics Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:uu:diva-322507DOI: 10.1016/j.carbon.2017.02.094ISI: 000400212100027OAI: oai:DiVA.org:uu-322507DiVA: diva2:1103310
Funder
Swedish Foundation for Strategic Research , Dnr SE13-0061Swedish Research Council, 621-2014-5596
Available from: 2017-05-30 Created: 2017-05-30 Last updated: 2017-05-30Bibliographically approved

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Majee, SubimalBanerjee, DebashreeZhang, Shi-LiZhang, Zhi-Bin
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Citation style
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