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Issue 12, 2010
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Silole-spaced triarylamine derivatives as highly efficient organic sensitizers in dye-sensitized solar cells (DSSCs)

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Abstract

Three new organic dyes that contain the dithienosilole (DTS) moiety as spacer have been synthesized and their photophysical/electrochemical properties, theoretical calculation and dye-sensitized solar cell (DSSC) performance have been investigated. The overall conversion efficiencies for DSSCs based on these dyes range from 6.73 to 7.50%, comparable to a (3–5′-[N,N-bis(9,9-dimethylfluorene-2-yl)phenyl]2,2′-bithiophene-5-yl}-2-cyanoacrylic acid (JK-2)-sensitized device (7.63%), fabricated and measured under the same experimental conditions. The DSSC constructed from one of the three compounds shows a higher open-circuit voltage (VOC) compared to those of the other two dye sensitized solar cells due to an increased electron lifetime (τe) in the conduction band of TiO2.

Graphical abstract: Silole-spaced triarylamine derivatives as highly efficient organic sensitizers in dye-sensitized solar cells (DSSCs)

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Publication details

The article was received on 10 Dec 2009, accepted on 04 Jan 2010 and first published on 10 Feb 2010


Article type: Paper
DOI: 10.1039/B926163J
Citation: J. Mater. Chem., 2010,20, 2391-2399
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    Silole-spaced triarylamine derivatives as highly efficient organic sensitizers in dye-sensitized solar cells (DSSCs)

    S. Ko, H. Choi, M. Kang, H. Hwang, H. Ji, J. Kim, J. Ko and Y. Kang, J. Mater. Chem., 2010, 20, 2391
    DOI: 10.1039/B926163J

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