1. SPECIFIC
IKC, College of Engineering, Swansea University, Swansea SA1 8EN, United Kingdom
2. IEK5-Photovoltaics, Forschungszentrum Jülich, 52425 Jülich, Germany
3. Faculty
of Engineering and CENIDE, University of Duisburg-Essen, Carl-Benz-Strasse
199, 47057 Duisburg, Germany