1. Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering (IMT); École Polytechnique Fédérale de Lausanne (EPFL); Rue A.-L. Breguet 2 2000 Neuchâtel Switzerland
2. Optics & Photonics Technology Laboratory; Institute of Microengineering (IMT), École Polytechnique Fédérale de Lausanne (EPFL); Rue A.-L. Breguet 2 2000 Neuchâtel Switzerland