1. Hybrid Solar Cells, Faculty of Engineering and Natural Sciences,
Tampere University, P.O. Box 541, Tampere FI-33014, Finland.
2. Energy Harvesting Research Group, SUPA, School of Physics and Astronomy,
University of St Andrews, North Haugh, St Andrews KY16 9SS, UK.
3. Department of Chemistry,
Yildiz Technical University, 34220 Esenler, Istanbul, Turkey.