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Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells
Authors:
Erik
Gabrielsson
(KTH Royal Institute of Technology)
,
Haining
Tian
(KTH Royal Institute of Technology)
,
Susanna K.
Eriksson
(Uppsala University)
,
Jiajia
Gao
(KTH Royal Institute of Technology)
,
Hong
Chen
(Stockholm University)
,
Fusheng
Li
(KTH Royal Institute of Technology)
,
Johan
Oscarsson
(Uppsala University)
,
Junliang
Sun
(Stockholm University)
,
HÃ¥kan
Rensmo
(Uppsala University)
,
Lars
Kloo
(KTH Royal Institute of Technology)
,
Anders
Hagfeldt
(Uppsala University)
,
Licheng
Sun
(KTH Royal Institute of Technology)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Chem. Commun.
, VOL 51
, PAGES 3858 - 3861
State:
Published (Approved)
Published:
January 2015
Diamond Proposal Number(s):
10379
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.
Subject Areas:
Chemistry
Instruments:
I19-Small Molecule Single Crystal Diffraction
Added On:
02/03/2016 10:18
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