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An organic hydrophilic dye for water-based dye-sensitized solar cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry. State Key Laboratory of Fine Chemicals, DUT-KTH Joint Research Center on Molecular Devices, Dalian University of Technology (DUT), China .ORCID iD: 0000-0002-4521-2870
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2014 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 16, no 37, 19964-19971 p.Article in journal (Refereed) Published
Abstract [en]

In this study we report the first organic hydrophilic dye employed for 100% water-based electrolyte DSSCs. We show that the replacement of alkyl by glycolic chains in the dye structure is able to provide excellent wettability, resulting in an efficient system with remarkably reduced desorption problems that allowed us to perform tests over a wide pH range. By changing the electrolyte composition, employing chenodeoxycholic acid as a co-adsorbent and using PEDOT counter-electrodes, 3% power conversion efficiency under 1-sun illumination was obtained. We show that chenodeoxycholic acid does not significantly increase the wettability, and we provide new insights into the higher performance resulting from its co-adsorption.

Place, publisher, year, edition, pages
2014. Vol. 16, no 37, 19964-19971 p.
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-153294DOI: 10.1039/c4cp02774dISI: 000341359700022ScopusID: 2-s2.0-84907052322OAI: diva2:752410

QC 20141003

Available from: 2014-10-03 Created: 2014-10-03 Last updated: 2014-10-03Bibliographically approved

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