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5,6-Bis(octyloxy)benzo[c][1,2,5]thiadiazole-Bridged Dyes for Dye-Sensitized Solar Cells with High Open-Circuit Voltage Performance
KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.ORCID iD: 0000-0001-6508-8355
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2013 (English)In: European Journal of Organic Chemistry, ISSN 1434-193X, E-ISSN 1099-0690, no 9, 1770-1780 p.Article in journal (Refereed) Published
Abstract [en]

Three new metal-free dyes with a 5,6-bis(octyloxy) benzo[c][1,2,5] thiadiazole core (DOBT-I-III) have been designed and synthesized for use as DSSCs. Their absorption properties and electrochemical and photovoltaic performances have been investigated systematically. The DSSCs based on DOBT-I-III show high open-circuit voltages (V-oc) of 829, 818, and 784 mV, respectively. Of the three dyes, DOBT-III, which contains a thiophene-bridging linker, exhibits the best photovoltaic performance: a short-circuit photocurrent density (J(sc)) of 12.74 mA cm(-2) and a fill factor (FF) of 0.73, which corresponds to an overall conversion efficiency of 7.29% under standard global AM 1.5 solar conditions.

Place, publisher, year, edition, pages
2013. no 9, 1770-1780 p.
Keyword [en]
Heterocycles, Dyes/pigments, Electrochemistry, Photovoltaic properties, Solar cells
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-121124DOI: 10.1002/ejoc.201201424ISI: 000316199300020Scopus ID: 2-s2.0-84875038769OAI: oai:DiVA.org:kth-121124DiVA: diva2:616915
Note

QC 20130419

Available from: 2013-04-19 Created: 2013-04-19 Last updated: 2017-12-06Bibliographically approved

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Li, Xin

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