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dc.contributor.authorDodoo-Arhin, Den
dc.contributor.authorHowe, Richarden
dc.contributor.authorHu, Guohuaen
dc.contributor.authorZhang, Yen
dc.contributor.authorHiralal, Pen
dc.contributor.authorBello, Aen
dc.contributor.authorAmaratunga, Gehanen
dc.contributor.authorHasan, Tawfiqueen
dc.date.accessioned2016-04-22T10:11:13Z
dc.date.available2016-04-22T10:11:13Z
dc.date.issued2016-08-01en
dc.identifier.citationDodoo-Arhin et al. Carbon (2016), 105, pp. 33-41. doi: 10.1016/j.carbon.2016.04.012en
dc.identifier.issn0008-6223
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/255136
dc.description.abstractWe present a stable inkjet printable graphene ink, formulated in isopropyl alcohol via liquid phase exfoliation of chemically pristine graphite with a polymer stabilizer. The rheology and low deposition temperature of the ink allow uniform printing. We use the graphene ink to fabricate counter electrodes (CE) for natural and ruthenium-based dye-sensitized solar cells (DSSCs). The repeatability of the printing process for the CEs is demonstrated through an array of inkjet-printed graphene electrodes, with ∼5% standard deviation in the sheet resistance. As photosensitizers, we investigate natural tropical dye extracts from Pennisetum glaucum, Hibiscus sabdariffa and Caesalpinia pulcherrima. Among the three natural dyes, we find extracts from C. pulcherrima exhibit the best performance, with ∼0.9% conversion efficiency using a printed graphene CE and a comparable ∼1.1% efficiency using a platinum (Pt) CE. When used with N719 dye, the inkjet-printed graphene CE shows a ∼3.0% conversion efficiency, compared to ∼4.4% obtained using Pt CEs. Our results show that inkjet printable graphene inks, without any chemical functionalization, offers a flexible and scalable fabrication route, with a material cost of only ∼2.7% of the equivalent solution processed Pt-based electrodes.
dc.language.isoenen
dc.rightsAttribution-NonCommercial-NoDerivs 2.0 UK: England & Wales*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.0/uk/*
dc.titleInkjet-printed graphene electrodes for dye-sensitized solar cellsen
dc.typeArticle
prism.endingPage41
prism.publicationDate2016en
prism.publicationNameCarbonen
prism.startingPage33
prism.volume105en
dcterms.dateAccepted2016-04-05en
rioxxterms.versionofrecord10.1016/j.carbon.2016.04.012en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2016-08-01en
dc.contributor.orcidHowe, Richard [0000-0001-5086-0699]
dc.contributor.orcidHu, Guohua [0000-0001-9296-1236]
dc.contributor.orcidAmaratunga, Gehan [0000-0002-8614-2864]
dc.contributor.orcidHasan, Tawfique [0000-0002-6250-7582]
dc.identifier.eissn1873-3891
rioxxterms.typeJournal Article/Reviewen
cam.issuedOnline2016-04-06en
rioxxterms.freetoread.startdate2017-04-06


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Attribution-NonCommercial-NoDerivs 2.0 UK: England & Wales
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial-NoDerivs 2.0 UK: England & Wales