1. Australian Centre for Advanced Photovoltaics University of New South Wales Sydney 2052 Australia
2. National Institute of Advanced Industrial Science and Technology (AIST) Research Center for Photovoltaics (RCPV) Central 2, Umezono 1‐1‐1, Ibaraki Tsukuba 305‐8568 Japan
3. Department: Characterisation and Simulation/CalLab Cells Fraunhofer‐Institute for Solar Energy Systems Heidenhofstr. 2 Freiburg D‐79110 Germany
4. European Commission—Joint Research Centre Directorate C—Energy, Transport and Climate Via E. Fermi 2749 Ispra IT‐21027 VA Italy
5. National Renewable Energy Laboratory 15013 Denver West Parkway Golden CO 80401 USA