1. Laboratoire PROcédés Matériaux et Energie Solaire; UPR 8521, Tecnosud Perpignan 66100 France
2. Institut National de la Recherche Scientifique; 1650 boulevard Lionel Boulet J3X1S2 Varennes Canada
3. Institute of Nanotechnology, National Research Council (NANOTEC-CNR), c/o Department of Chemistry; University of Bari Aldo Moro; via Orabona 4 Bari 70126 Italy