title: Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells.
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.
authors: Department of Chemistry, Organic Chemistry, Center of Molecular Devices, School of Chemical Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden. lichengs@kth.se.
authors: Erik
authors: E
authors: Gabrielsson
authors: Haining
authors: H
authors: Tian
authors: Susanna K
authors: SK
authors: Eriksson
authors: Jiajia
authors: J
authors: Gao
authors: Hong
authors: H
authors: Chen
authors: Fusheng
authors: F
authors: Li
authors: Johan
authors: J
authors: Oscarsson
authors: Junliang
authors: J
authors: Sun
authors: Håkan
authors: H
authors: Rensmo
authors: Lars
authors: L
authors: Kloo
authors: Anders
authors: A
authors: Hagfeldt
authors: Licheng
authors: L
authors: Sun