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Issue 43, 2017
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A supramolecular assembly of metal-free organic dye with zinc porphyrin chromophore for dye-sensitized solar cells

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Abstract

Two porphyrin chromophores, P1 and P2, were prepared and used as antenna units to coordinate with a metal-free organic dye, JH1, containing pyridine groups. This supramolecular self-assembly strategy can not only effectively improve the light-harvesting ability of the devices but also effectively reduces electron recombination by preventing I3 of the electrolyte from penetrating into the TiO2 surface. The DSSC based on JH1 showed a PCE of 2.46%, with a Voc of 615 mV, Jsc of 6.54 mA cm−2, and FF of 61.18%. After supramolecular self-assembly, the Jsc and Voc of the device were greatly improved. Specifically for the device based on JH1 + P2, the PCE reached 4.39%, which is about 78% greater than the PCE of the device based on JH1; this is mainly due to the Jsc increase of 2.85 mA cm−2 and the Voc increase of 93 mV. Compared to co-sensitization, supramolecular self-assembly does not require tedious optimization steps; thus, this may be a promising and convenient way to improve the overall performance of DSSCs.

Graphical abstract: A supramolecular assembly of metal-free organic dye with zinc porphyrin chromophore for dye-sensitized solar cells

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Publication details

The article was received on 11 Sep 2017, accepted on 10 Oct 2017 and first published on 11 Oct 2017


Article type: Paper
DOI: 10.1039/C7DT03373G
Citation: Dalton Trans., 2017,46, 15124-15129
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    A supramolecular assembly of metal-free organic dye with zinc porphyrin chromophore for dye-sensitized solar cells

    H. Jia, M. Huang, Z. Peng, D. Wang, G. Zhang and M. Guan, Dalton Trans., 2017, 46, 15124
    DOI: 10.1039/C7DT03373G

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