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  4. Low-temperature Fabrication of Highly-Efficient, Optically-Transparent (FTO-free) Graphene Cathode for Co-Mediated Dye-Sensitized Solar Cells with Acetonitrile-free Electrolyte Solution
 
research article

Low-temperature Fabrication of Highly-Efficient, Optically-Transparent (FTO-free) Graphene Cathode for Co-Mediated Dye-Sensitized Solar Cells with Acetonitrile-free Electrolyte Solution

Kavan, Ladislav  
•
Liska, Paul  
•
Zakeeruddin, Shaik M.  
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2016
Electrochimica Acta

Propionitrile electrolyte solutions mixed with sulfolane or with 1-ethyl 3-methyl imidazolium tetracyanoborate (ionic liquid) are optimized for Co(bpy)(3)(3+)/Co(bpy)(3)(2+)-tmediated DSCs working at low illumination intensity. Highly-active cathode catalysts based on graphene oxide, either pure or mixed with graphene nanoplatelets or with stacked graphene fibers, can be prepared at temperatures <200 degrees C. The catalytic layers are well adhering to the substrates, i.e. to FTO or to stainless-steel surfaces, both the flat steel sheet and the steel wires in woven fabric consisting of transparent polyester (PEN) fibers in warp and stainless steel wires in weft (Sefar B23). The dye-sensitized solar cells with various cathodes, fabricated either from Pt or from optimized graphene-based catalysts, and supported by either FTO or by stainless-steel/PEN fabric, show similar solar conversion efficiencies between 6.9 and 7.9% at 0.25 sun illumination. (C) 2016 Elsevier Ltd. All rights reserved.

  • Details
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Type
research article
DOI
10.1016/j.electacta.2016.02.097
Web of Science ID

WOS:000372524300005

Author(s)
Kavan, Ladislav  
Liska, Paul  
Zakeeruddin, Shaik M.  
Graetzel, Michael  
Date Issued

2016

Publisher

Elsevier

Published in
Electrochimica Acta
Volume

195

Start page

34

End page

42

Subjects

dye sensitized solar cell

•

electrochemical impedance spectroscopy

•

stainless-steel

•

woven fabric

•

Co-mediator

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPI  
Available on Infoscience
July 19, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/127406
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