1. NTNU, Department of Materials Science and Engineering, Alfred Getz vei 2B, Trondheim, Norway
2. SINTEF, Materials and Chemistry, Oslo, Norway
3. Fraunhofer Institute for Solar Energy Systems ISE, Freiburg, Germany
4. Freiburger Materialforschungszentrum FMF, Freiburg, Germany
5. SINTEF, Materials and Chemistry, Trondheim, Norway