Two Redox Couples are Better Than One: Improved Current and Fill Factor from Cobalt-Based Electrolytes in Dye-Sensitized Solar Cells
2014 (English)In: Advanced Energy Materials, ISSN 1614-6832, Vol. 4, no 8, 1301273- p.Article in journal (Refereed) Published
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.
electrolytes, photoelectrochemistry, redox chemistry, solar cells, tandem redox systems
Chemical Sciences Energy Engineering
IdentifiersURN: urn:nbn:se:kth:diva-148317DOI: 10.1002/aenm.201301273ISI: 000338020900001ScopusID: 2-s2.0-84902084202OAI: oai:DiVA.org:kth-148317DiVA: diva2:736373
FunderSwedish Research CouncilSwedish Energy AgencyKnut and Alice Wallenberg Foundation
QC 201408062014-08-062014-08-052014-08-06Bibliographically approved