1. Photovoltaics Centre of Excellence; University of New South Wales; Sydney 2052 NSW Australia
2. IMTEK; Albrecht-Ludwigs-Universiät; D-79110 Freiburg Germany
3. Forschungszentrum Jülich GmbH; IEK-5, D-52425 Jülich Germany
4. Silanna Semiconductor Pty Ltd; 8 Herb Elliott Ave. Sydney Olympic Park 2127 NSW Australia