Skip to main content
×
×
Home

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

  • Zhipan Zhang (a1), Peter. Chaoyu Chen (a2), Shaik Mohammed Zakeeruddin (a3), Jacques-Edouard Moser (a4) and Michael Grätzel (a5)...
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 %.

Copyright
References
Hide All
1.O'Regan, B.; Grätzel, M. Nature 1991, 353, 737.
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
3.Gregg, B. A.; Pichot, F.; Ferrere, S.; Fields, C. R. J. Phys. Chem. B 2001, 105, 14221429.
4., Gregg, Coord, B. A.. Chem. Rev. 2004, 248, 12151224
5.Nusbaumer, H.; Zakeeruddin, S. M.; -E.Moser, J. Moser, J.; Graetzel, M. Chem. Eur.J. 2003, 9, 3756
6.Sapp, S. A.; Elliott, C. M.; Contado, C.; Caramori, S.; Bignozzi, C. A. J. Am. Chem. Soc. 2002, 124, 11215
7.Cazzanti, S.; Caramori, S.; Argazzi, R.; Elliott, C.M.; Bignozzi, C.A. J. Am. Chem. Soc. 2006, 128, 9996
8.Nishide, H.; Suga, T. Interface, 2005, 14(4), 32.
9.Barbé, C. J.; Arendse, F.; Comte, P.; Jirousek, M.; Lenzmann, F.; Shklover, V.; Grätzel, M. J. Am. Ceram. Soc. 1997, 80, 3157.
10.Ito, S.; Chen, P.; Comte, P.; Nazeeruddin, M. K.; Liska, P.; Péchy, P.; Grätzel, M. Submitted.
11.Kavan, L.; Grätzel, M. Electrochim. Acta 1995, 40, 643.
12.Bard, A.J.; Faulkner, L.R. Electrochemical Methods: Fundamentals and Applications, second ed., John Wiley and Sons Inc., New York, 2001
13.Suga, T.; -JPu, Y. Pu, Y..; Oyaizu, K.; Nishide, H., Bull. Chem. Soc. Jpn, 2004, 77, 2203
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
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 3 *
Loading metrics...

Abstract views

Total abstract views: 103 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 24th April 2018. This data will be updated every 24 hours.