1. Department of Advanced
Materials for Energy, Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre, 1, 08930 Sant Adrià de Besòs, Catalonia, Spain
2. Repsol Technology Center, Carretera de Extremadura A-5, km
18, 28935 Móstoles,
Madrid, Spain
3. Department of Electronics, Universitat de Barcelona (UB), Martí i Franquès, 1, 08028 Barcelona, Catalonia,them Spain