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Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
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2015 (English)In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 18, 3858-3861 p.Article in journal (Refereed) Published
Abstract [en]

Dipicolinic acidwas 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.

Place, publisher, year, edition, pages
2015. Vol. 51, no 18, 3858-3861 p.
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Chemical Sciences
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URN: urn:nbn:se:uu:diva-249034DOI: 10.1039/c4cc06432aISI: 000349990600035PubMedID: 25655483OAI: oai:DiVA.org:uu-249034DiVA: diva2:807544
Available from: 2015-04-23 Created: 2015-04-10 Last updated: 2017-12-04Bibliographically approved

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Gabrielsson, ErikTian, HainingEriksson, Susanna K.Oscarsson, JohanRensmo, HåkanHagfeldt, Anders

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