1. Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering University of New South Wales Sydney 2052 Australia
2. European Commission–Joint Research Centre Ispra (VA) Italy
3. Renewable Energy Research Center (RENRC) National Institute of Advanced Industrial Science and Technology (AIST) Central 2, Umezono 1‐1‐1 Tsukuba Ibaraki 305‐8568 Japan
4. National Renewable Energy Laboratory 15013 Denver West Parkway Golden Colorado 80401 USA
5. Calibration and Test Center (CalTeC), Solar Cells Laboratory Institut für Solarenergieforschung GmbH (ISFH) Am Ohrberg 1 Emmerthal D‐31860 Germany
6. Fraunhofer‐Institute for Solar Energy Systems–ISE CalLab Heidenhofstr. 2 Freiburg D‐79110 Germany