1. Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
2. Department of Physics “Ettore Pancini”, University of Naples Federico II, Comp. Univ. Monte Sant’Angelo, Naples 80126, Italy
3. Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 7610001, Israel
4. Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33101, Finland
5. Surface Science Group, Photonics Laboratory, Tampere University, P.O. Box 692, Tampere FI-33014, Finland
6. Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, Tampere FI-33014, Finland
7. Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant’Angelo, Naples 80126, Italy