A Solvent-Free, SeCN-/(SeCN)3 - Based Ionic Liquid Electrolyte for High-Efficiency Dye-Sensitized Nanocrystalline Solar Cells

A solvent-free ionic liquid electrolyte based on the SeCN-/(SeCN)3 - redox couple has been employed for high-efficiency dye-sensitized nanocrystalline solar cells. For the first time an alternative redox couple has been identified to rival and even exceed the performance of the iodide/triiodide coup...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2004-06, Vol.126 (23), p.7164-7165
Main Authors: Wang, Peng, Zakeeruddin, Shaik M, Moser, Jacques-E, Humphry-Baker, Robin, Grätzel, Michael
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Natural energy
Photovoltaic conversion
Solar cells. Photoelectrochemical cells
Solar energy
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Summary:A solvent-free ionic liquid electrolyte based on the SeCN-/(SeCN)3 - redox couple has been employed for high-efficiency dye-sensitized nanocrystalline solar cells. For the first time an alternative redox couple has been identified to rival and even exceed the performance of the iodide/triiodide couple even at full sunlight. Unprecedented 7.5−8.3% power conversion efficiencies under AM 1.5 sunlight have been achieved for photovoltaic devices with solvent-free ionic liquid electrolytes.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja048472r