High photo-currents with a zwitterionic thiocyanate-free dye in aqueous-based dye sensitized solar cells

We report a new water soluble and stable thiolate/disulfide redox couple (T(-)/DS) and its use with a new zwitterionic and thiocyanate-free dye (T169) in a 100% aqueous electrolyte system. A DSSC incorporating T169 and the T(-)/DS showed the highest photocurrents (Jsc = 13.30 mA cm(-2)) and IPCE% (8...

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Published inDalton transactions : an international journal of inorganic chemistry Vol. 45; no. 13; pp. 5622 - 5628
Main Authors Fayad, Remi, Shoker, Tharallah A, Ghaddar, Tarek H
Format Journal Article
LanguageEnglish
Published England 01.01.2016
Subjects
Aqueous electrolytes
Dyes
Joining
Photocurrent
Photovoltaic cells
Solar cells
Stability
Volatile organic compounds
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Summary:We report a new water soluble and stable thiolate/disulfide redox couple (T(-)/DS) and its use with a new zwitterionic and thiocyanate-free dye (T169) in a 100% aqueous electrolyte system. A DSSC incorporating T169 and the T(-)/DS showed the highest photocurrents (Jsc = 13.30 mA cm(-2)) and IPCE% (84%) values reported to date. In addition, a 2000 h long-term stability measurement was performed, where Jsc and Voc of the above mentioned DSSC stayed somehow the same except for the fill factor (FF) which decreased from 0.62 to 0.48 and consequently lowered the total efficiency (from η = 4.5% on day 1 to η = 3.3% after 2000 h).
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ISSN:1477-9226
1477-9234
DOI:10.1039/c6dt00071a