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Two Redox Couples are Better Than One: Improved Current and Fill Factor from Cobalt-Based Electrolytes in Dye-Sensitized Solar Cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.ORCID iD: 0000-0001-8084-1181
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.ORCID iD: 0000-0002-4521-2870
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.
2014 (English)In: Advanced Energy Materials, ISSN 1614-6832, Vol. 4, no 8, 1301273- p.Article in journal (Refereed) Published
Abstract [en]

A tandem redox strategy is used in cobalt-based electrolytes. Co(bpy) 3 2+/Co(bpy)3 3+ offers a high photovoltage at the photoanode, whereas the I-/I3 - or Fc/Fc+ redox couples facilitate charge transfer at the counter electrode. Electron exchange in the electrolyte offers beneficial concentration gradients. The overall conversion efficiency is improved from 6.5% to 7.5%.

Place, publisher, year, edition, pages
2014. Vol. 4, no 8, 1301273- p.
Keyword [en]
electrolytes, photoelectrochemistry, redox chemistry, solar cells, tandem redox systems
National Category
Chemical Sciences Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-148317DOI: 10.1002/aenm.201301273ISI: 000338020900001Scopus ID: 2-s2.0-84902084202OAI: oai:DiVA.org:kth-148317DiVA: diva2:736373
Funder
Swedish Research CouncilSwedish Energy AgencyKnut and Alice Wallenberg Foundation
Note

QC 20140806

Available from: 2014-08-06 Created: 2014-08-05 Last updated: 2014-08-06Bibliographically approved

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Cong, JiayanSun, Licheng

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