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Issue 18, 2015
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Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells

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Abstract

Dipicolinic acid was investigated as a new anchoring group for DSSCs. A pilot dye (PD2) bearing this new anchoring group was found to adsorb significantly stronger to TiO2 than its cyanoacrylic acid analogue. The electrolyte composition was found to have a strong effect on the photoelectrochemical properties of the adsorbed dye in the device, allowing the dye LUMO energy to be tuned by 0.5 eV. Using a pyridine-free electrolyte, panchromatic absorption of the dye on TiO2 extending to 900 nm has been achieved. Solar cells using PD2 and a Co(bpy)3 based electrolyte showed unique stability under simulated sunlight and elevated temperatures.

Graphical abstract: Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells

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Publication details

The article was received on 15 Aug 2014, accepted on 28 Jan 2015 and first published on 29 Jan 2015


Article type: Communication
DOI: 10.1039/C4CC06432A
Citation: Chem. Commun., 2015,51, 3858-3861
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    Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells

    E. Gabrielsson, H. Tian, S. K. Eriksson, J. Gao, H. Chen, F. Li, J. Oscarsson, J. Sun, H. Rensmo, L. Kloo, A. Hagfeldt and L. Sun, Chem. Commun., 2015, 51, 3858
    DOI: 10.1039/C4CC06432A

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