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Novel fluoranthene dyes for efficient dye-sensitized solar cells
KTH, School of Biotechnology (BIO), Theoretical Chemistry.
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2009 (English)In: Dyes and pigments, ISSN 0143-7208, E-ISSN 1873-3743, Vol. 82, no 3, 353-359 p.Article in journal (Refereed) Published
Abstract [en]

Three, novel, fluoranthene-based dyes, 2-cyano-3-(5-(7,12-diphenylbenzo[k]fluoranthen-3-yl)thiophen-2-yl)acryli c acid, 2-(5-((5-(7,12-diphenylben-zo[k]fluoranthen-3-yl)thiophen-2-yl)methylene )-4-oxo-2-thioxothiazolidin-3-yl)acetic acid and 2-cyano-3-(4-(2-(7,12-diphenylbenzo[k]fluoranthen-3-yl)ethynyl)phenyl) acrylic acid, were synthesized for application as sensitizers in dye-sensitized solar cells. In each dye, the 7,12-diphenyl-benzo[k]fluoranthene moiety acted as electron donor with phenyl and thiophene units as electron spacers and carboxylic acid as electron acceptor. Tuning of the HOMO and LUMO energy levels was conveniently accomplished by changing the spacer and acceptor moiety, as confirmed using electrochemical measurements. Maximum solar energy:electricity conversion efficiency was 4.4% under AM 1.5 solar simulator (100 mW cm(-2)) for 2-cyano-3-(5-(7,12-diphenylbenzo[k]fluoranthen-3-yl)thiophen-2-yl)acryli c acid. The results suggest that dyes based on fluoranthene donor are promising candidates for high performance, dye-sensitized solar cells.

Place, publisher, year, edition, pages
2009. Vol. 82, no 3, 353-359 p.
Keyword [en]
Dye-sensitized solar cells, Fluoranthene, Synthesis, Characterization, Nanocrystalline TiO2, Photovoltaic properties
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-32379DOI: 10.1016/j.dyepig.2009.02.006ISI: 000266543900015ScopusID: 2-s2.0-64849109162OAI: diva2:410398
QC 20110413Available from: 2011-04-13 Created: 2011-04-13 Last updated: 2011-04-13Bibliographically approved

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