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Title: Carbazole-bridged double D-A dye for efficient dye-sensitized solar cell
Authors: Songyos Pramjit
Utt Eiamprasert
Panida Surawatanawong
Pattida Lertturongchai
Supavadee Kiatisevi
Mahidol University
Keywords: Chemical Engineering;Chemistry
Issue Date: 1-Jan-2015
Citation: Journal of Photochemistry and Photobiology A: Chemistry. Vol.296, (2015), 1-10
Abstract: © 2014 Elsevier B.V. All rights reserved. A di-anchoring organic dye based on an acceptorπ spacerdonorsecondary donordonorπ spacer acceptor structural motif has been synthesized and used as a sensitizer for dye-sensitized solar cells (DSSCs). The new synthetic approach uses two π spacers, two acceptors and two different donors such as arylamino and carbazole units. The double donoracceptor dye CBZ-3 is linked by a carbazole unit as a secondary donor which increases the donoracceptor strength of the dye and proved to increase the η and Jscvalues of the photovoltaic cell compared to the corresponding mono-anchoring system CBZ-2 and the monodonor dye CBZ-1. With the non-planar structure of the arylamino group and the alkyl chains which efficiently prevent the formation of the dye aggregates, the dye exhibited a high open-circuit photovoltage (Voc) of 650 mV, a short-circuit photocurrent density (Jsc) of 7.20 mA cm-2and the solar energy-to-electricity conversion efficiency (η) of 3.23%.
ISSN: 10106030
Appears in Collections:Scopus 2011-2015

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