1. Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin-Film Electronics Laboratory, Rue de la Maladière 71, CH-2000 Neuchâtel, Switzerland
2. SIMS Services, Evans Analytical Group, 810 Kifer Road, Sunnyvale, California 94086, USA