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A supramolecular assembling of metal-free organic dye with zinc porphyrin chromophore for dye-sensitized solar cells

Abstract

Two porphyrin chromophores P1 and P2 were prepared and have been used as antenna units to coordinate with 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 reduce electron recombination by preventing the I3- of the electrolyte penetrating into the TiO2 surface. The DSSC based on orgnaic dye JH1 showed a PCE of 2.46%, with the 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 both greatly improved. Especially for the device based on JH1+P2, the PCE reached 4.39%, which increased about 78% compared with 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.

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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, Accepted Manuscript
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    A supramolecular assembling 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, Accepted Manuscript , DOI: 10.1039/C7DT03373G

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