1. High photo-currents with a zwitterionic thiocyanate-free dye in aqueous-based dye sensitized solar cells
- Author
-
Remi Fayad, Tarek H. Ghaddar, and Tharallah A. Shoker
- Subjects
Aqueous solution ,Thiocyanate ,Total efficiency ,Inorganic chemistry ,Disulfide bond ,02 engineering and technology ,Aqueous electrolyte ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Redox ,0104 chemical sciences ,Inorganic Chemistry ,chemistry.chemical_compound ,Dye-sensitized solar cell ,Water soluble ,chemistry ,0210 nano-technology - Abstract
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).
- Published
- 2016