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Optimizing the optical and electrical properties of graphene ink thin films by laser-annealing
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2015 (English)In: 2D Materials, ISSN 2053-1583, Vol. 2, no 1, 011003Article in journal (Refereed) Published
Abstract [en]

We demonstrate a facile fabrication technique for graphene-based transparent conductive films. Highly flat and uniform graphene films are obtained through the incorporation of an efficient laser annealing technique with one-time drop casting of high-concentration graphene ink. The resulting thin films are uniform and exhibit a transparency of more than 85% at 550 nm and a sheet resistance of about 30 k Omega/square. These values constitute an increase of 45% in transparency, a reduction of surface roughness by a factor of four and a decrease of 70% in sheet resistance compared to un-annealed films.

Place, publisher, year, edition, pages
2015. Vol. 2, no 1, 011003
Keyword [en]
graphene, transparent conductor, ink-jet printing, laser annealing
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-169293DOI: 10.1088/2053-1583/2/1/011003ISI: 000354987200003Scopus ID: 2-s2.0-84947921205OAI: oai:DiVA.org:kth-169293DiVA: diva2:821200
Funder
EU, European Research Council, 307311Swedish Research Council, 2014-6160
Note

QC 20150615

Available from: 2015-06-15 Created: 2015-06-12 Last updated: 2015-06-15Bibliographically approved

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