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Proceedings Paper

High efficiency porphyrin sensitized mesoscopic solar cells
Author(s): Fabrizio Giordano; Chenyi Yi; Joël Teuscher; Shaik M. Zakeeruddin; Michael Grätzel
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Paper Abstract

Dye-Sensitized Solar Cells (DSSC) represents a reliable technology, ready for the market and able to compete with silicon solar cells for specific fields of application. Porphyrin dyes allow reaching high power conversion efficiency in conjunction with cobalt redox electrolytes due to larger open circuit potentials. The bigger size of the cobalt complexes compared to standard iodide/triiodide redox couple hampers its percolation through the meso-porous TiO2 network, thus impairing the regeneration process. In case of porphyrin dyes mass transport problems in the electrolyte need to be carefully handled, due to the large size of the sensitizing molecule and the bulky cobalt complexes. Herein we report the study of structural variations on porphyrin sensitizers and their influence on the DSSC performance with cobalt based redox electrolyte.

Paper Details

Date Published: 6 October 2014
PDF: 7 pages
Proc. SPIE 9184, Organic Photovoltaics XV, 91840R (6 October 2014); doi: 10.1117/12.2061852
Show Author Affiliations
Fabrizio Giordano, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Chenyi Yi, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Joël Teuscher, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Shaik M. Zakeeruddin, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Michael Grätzel, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 9184:
Organic Photovoltaics XV
Zakya H. Kafafi; Paul A. Lane; Ifor D. W. Samuel, Editor(s)

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