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Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.ORCID iD: 0000-0001-6029-1688
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD. Uppsala University, Sweden.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.ORCID iD: 0000-0001-5115-4593
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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.
Keyword [en]
Core-Level Shift, Electrolytes, Additives, Molecules
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-163486DOI: 10.1039/c4cc06432aISI: 000349990600035PubMedID: 25655483Scopus ID: 2-s2.0-84923136577OAI: oai:DiVA.org:kth-163486DiVA: diva2:800556
Funder
Knut and Alice Wallenberg FoundationSwedish Energy AgencyVINNOVASwedish Research Council
Note

QC 20150407

Available from: 2015-04-07 Created: 2015-04-07 Last updated: 2017-12-04Bibliographically approved

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Gabrielsson, ErikGao, JiajiaLi, FushengSun, Licheng

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