1. School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW, Australia
2. Fraunhofer ISE, Freiburg, Germany
3. Energy Research Centre of the Netherlands (ECN), TNO Solar Energy, Petten, The Netherlands
4. Research School of Engineering, The Australian National University, Canberra, ACT, Australia
5. Department of Physics, University of Ottawa, Ottawa, ON, Canada