Duprez, Virginie1; Biancardo, Matteo1; Krebs, Frederik C4
1 Risø National Laboratory for Sustainable Energy, Technical University of Denmark2 Polymers for Energy Technology, Polymer Department, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3 Polymer Department, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4 Department of Energy Conversion and Storage, Technical University of Denmark
A series of ruthenium complexes with and without TiO2, anchoring carboxylic acid groups have been synthesised and characterised using nuclear magnetic resonance (NMR), UV-vis and luminescence. These complexes were adsorbed on thin films of the wide band-gap semiconductor anatase and were tested as photosensitisers under standard conditions. I/V characteristics of such devices revealed superior performance of the non-symmetric complexes [4'-(4-bromophenyl)-[2,2'; 6',2"] terpyridine]Ru(II) [4'-(4-bromopheny)-[2,2'; 6',2"] terpyridine-4,4"-dicarboxylic acid] and [2,2'; 6',2"] terpyridine Ru(II) [2,2'; 6',2"] terpyridine-4'-carboxylic acid with a maximum output power similar to 0.016mWcm(-2) under illumination at 100mWcm(-2) AM1.5 and efficiencies 3 times higher than the symmetric complexes. (c) 2006 Elsevier B.V. All rights reserved.
Solar Energy Materials and Solar Cells, 2007, Vol 91, Issue 4, p. 230-237