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A Novel Efficient, Iodide-Free Redox Mediator for Dye-Sensitized Solar Cells

Published online by Cambridge University Press:  01 February 2011

Zhipan Zhang ,
Peter. Chaoyu Chen ,
Shaik Mohammed Zakeeruddin ,
Jacques-Edouard Moser  and
Michael Grätzel
Zhipan Zhang
Affiliation:
[email protected], Ecole Polytechnique Federale de Lausanne, Institute of Chemical Sciences and Engineering, Station 6, LPI-ISIC-EPFL, Lausanne, CH-1015, Switzerland, 0041-21-6936169, 0041-21-6934111
Peter. Chaoyu Chen
Affiliation:
[email protected], Ecole Polytechnique Federale de Lausanne, Institute of Chemical Sciences and Engineering, Station 6, LPI-ISIC-EPFL, Lausanne, CH-1015, Switzerland
Shaik Mohammed Zakeeruddin
Affiliation:
[email protected], Ecole Polytechnique Federale de Lausanne, Institute of Chemical Sciences and Engineering, Station 6, LPI-ISIC-EPFL, Lausanne, CH-1015, Switzerland
Jacques-Edouard Moser
Affiliation:
[email protected], Ecole Polytechnique Federale de Lausanne, Institute of Chemical Sciences and Engineering, Station 6, LPI-ISIC-EPFL, Lausanne, CH-1015, Switzerland
Michael Grätzel
Affiliation:
[email protected], Ecole Polytechnique Federale de Lausanne, Institute of Chemical Sciences and Engineering, Station 6, LPI-ISIC-EPFL, Lausanne, CH-1015, Switzerland
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Abstract

A stable organic molecular radical, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), has been electrochemically studied and employed as a new redox mediator in nanocrystalline TiO2 dye-sensitized solar cells (DSCs) when it is doped with nitrosonium tetrafluoroborate (NOBF4). Reasonable photocurrents can be achieved despite of driving force of only 0.2 eV for the TEMPO/TEMPO+ system as compared to 0.6 eV for the iodide/triiodide redox system. Judicious selections of a 5 µm photoanode made from TiO2 mesoscopic particles (60 nm in diameter) and an organic sensitizer with high molar extinction coefficient yield an overall power conversion of 5.0 % under AM 1.5 illumination at 100 mW cm-2 and an incident photon-to-current conversion efficiencies (IPCE) in excess of 50 %.

Keywords

photovoltaicnanostructuredevices
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1013: Symposium Z – Organic and Nanoparticle Hybrid Photovoltaic Devices , 2007 , 1013-Z06-02
Copyright
Copyright © Materials Research Society 2007

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References

1. O'Regan, B.; Grätzel, M. Nature 1991, 353, 737.Google Scholar
2. Nazeeruddin, M.K.; F., De Angelis; Fantacci, S.; Selloni, A.; Viscardi, G.; Liska, P.; Ito, S.; Bessho, T.; Grätzel, M. J. Am. Chem. Soc. 2005, 127, 16835 Google Scholar
3. Gregg, B. A.; Pichot, F.; Ferrere, S.; Fields, C. R. J. Phys. Chem. B 2001, 105, 1422–1429.Google Scholar
4. , Gregg, Coord, B. A.. Chem. Rev. 2004, 248, 1215–1224 Google Scholar
5. Nusbaumer, H.; Zakeeruddin, S. M.; -E., Moser, J.; Graetzel, M. Chem. Eur.J. 2003, 9, 3756 Google Scholar
6. Sapp, S. A.; Elliott, C. M.; Contado, C.; Caramori, S.; Bignozzi, C. A. J. Am. Chem. Soc. 2002, 124, 11215 Google Scholar
7. Cazzanti, S.; Caramori, S.; Argazzi, R.; Elliott, C.M.; Bignozzi, C.A. J. Am. Chem. Soc. 2006, 128, 9996 Google Scholar
8. Nishide, H.; Suga, T. Interface, 2005, 14(4), 32.Google Scholar
9. Barbé, C. J.; Arendse, F.; Comte, P.; Jirousek, M.; Lenzmann, F.; Shklover, V.; Grätzel, M. J. Am. Ceram. Soc. 1997, 80, 3157.Google Scholar
10. Ito, S.; Chen, P.; Comte, P.; Nazeeruddin, M. K.; Liska, P.; Péchy, P.; Grätzel, M. Submitted.Google Scholar
11. Kavan, L.; Grätzel, M. Electrochim. Acta 1995, 40, 643.Google Scholar
12. Bard, A.J.; Faulkner, L.R. Electrochemical Methods: Fundamentals and Applications, second ed., John Wiley and Sons Inc., New York, 2001 Google Scholar
13. Suga, T.; -J, Pu, Y..; Oyaizu, K.; Nishide, H., Bull. Chem. Soc. Jpn, 2004, 77, 2203 Google Scholar
14. Ito, S.; Zakeeruddin, S. M.; Humphry-Baker, R.; Liska, P.; Charvet, R.; Comte, P.; Nazeeruddin, M. K.; Péchy, P.; Takata, M.; Miura, H.; Uchida, S.; Grätzel, M. Adv. Mater. 2006, 18, 1202 Google Scholar