1. PROMES-CNRS (Processes, Materials, Solar Energy Laboratory), UPR 8521; 7 rue du Four Solaire 66120 Font-Romeu Odeillo France
2. PROMES-CNRS and University of Perpignan Via Domitia (UPVD); Rambla de la Thermodynamique; Tecnosud 66100 Perpignan France