Sections Science & Environment Mathematics/Physics/Chemistry Partager Meeting with Christophe Ballif Émission CQFD 07 March 2014 Christophe Ballif Sciences et techniques de l'ingénieur, EPFL Légende , Laboratory of Photovoltaics and Thin Films at EPFL. #PHYSICS 510 Interventions #TECHNOLOGY 1325 Interventions #ENERGY 310 Interventions #ENVIRONMENT 1207 Interventions