DYE SENSITISED SOLAR CELLS: NEW CHALLENGES FROM GRAPHENE CATHODE AND IODINE-FREE ELECTROLYTE

0393338 - ÚFCH JH 2014 RIV CZ eng C - Conference Paper (international conference)
Kavan, Ladislav
DYE SENSITISED SOLAR CELLS: NEW CHALLENGES FROM GRAPHENE CATHODE AND IODINE-FREE ELECTROLYTE.
New trends in application of photo and electro catalysis. Proceedings of the 4th Czech-Austrian workshop. Prague: Institute of Chemical Technology, 2012 - (Krýsa, J.; Klusoň, P.), s. 11-13. ISBN 978-80-7080-809-2.
[New trends in application of photo and electro catalysis. The Czech-Austrian workshop /4./. Hnanice (CZ), 05.12.2011-07.12.2011]
R&D Projects: GA AV ČR IAA400400804; GA AV ČR KAN200100801; GA MŠMT LC510
Institutional research plan: CEZ:AV0Z40400503
Keywords : dye-sensitized solar cells * graphene
Subject RIV: CG - Electrochemistry

Graphene nanoplatelets (GNP) in the form of thin semitransparent film on F-doped SnO2 (FTO) exhibit high electrocatalytic activity for Co(L)2; where L is 6-(lH-pyrazol-l-yl)- 2,2‘-bipyridine. GNP films with optical transmission below 88% are outperforming the activity of platinized FTO for the Co2+/3+(L)2 redox reaction. Dye-sensitized solar cells with Y123 dye adsorbed on TiO2 photoanode achieved energy conversion efficiencies between 8 to 10 % for both GNP and Pt-based cathodes. However, the cell with GNP cathode is superior to that with Pt-FTO cathode in fill factors and in the efficiency at higher illumination intensities.
Permanent Link: http://hdl.handle.net/11104/0222065