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Highly efficient iso-quinoline cationic organic dyes without vinyl groups for dye-sensitized solar cells
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2013 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 1, no 7, 2441-2446 p.Article in journal (Refereed) Published
Abstract [en]

Four organic dyes without a vinyl group are synthesized and applied in dye-sensitized solar cells (DSSCs). The iso-quinoline cation is employed firstly as an electron acceptor in the dye molecular structure. The effect of different dye structures on the photo-electrochemical properties and the performance of the DSSCs are systematically studied. The photovoltaic performances of the DSSCs sensitized by the JH304 dye exhibit the best conversion efficiency of 7.3% (under standard AM 1.5G illumination (100 mW cm(-2))) with a short-circuit current density (J(sc)) of 14.4 mA cm(-2), an open-circuit voltage (V-oc) of 684 mV and a fill factor (ff) of 74.4%. In comparison, the device sensitized by the N719 dye shows an efficiency of 7.9%. The DSSC device sensitized by JH304 also exhibits excellent soaking stability under sunlight for 1000 h.

Place, publisher, year, edition, pages
2013. Vol. 1, no 7, 2441-2446 p.
Keyword [en]
Tetrahydroquinoline Dyes, Cyanine Dyes, Performance, Transport, Energy
National Category
Materials Chemistry
URN: urn:nbn:se:kth:diva-119486DOI: 10.1039/c2ta00905fISI: 000314643100012ScopusID: 2-s2.0-84876581538OAI: diva2:611213
Knut and Alice Wallenberg Foundation

QC 20130315

Available from: 2013-03-15 Created: 2013-03-14 Last updated: 2013-03-15Bibliographically approved

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Sun, Licheng
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Organic ChemistryCentre of Molecular Devices, CMD
Materials Chemistry

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