1. School of Photovoltaic and Renewable Energy Engineering, UNSW Australia, Sydney, NSW 2052, Australia
2. AmberWave Inc., 45A Northwestern Dr., Salem, New Hampshire 03079, USA
3. SolAero Technologies, Corp., 10420 Research Rd SE, Albuquerque, New Mexico 87123, USA
4. School of Engineering, Macquarie University, Sydney, NSW 2109, Australia