Limiting photovoltaic efficiency under new ASTM International G173‐based reference spectra

Efficiency limits upon photovoltaic energy conversion are re-evaluated under the new ASTM International G173-based reference spectra. Peak terrestrial efficiency for a single-junction device increases to 33.8% under the new air mass 1.5G spectrum, whereas overall and time-symmetric limits increase to 74.0% and 68.0%, respectively. Copyright © 2011 John Wiley & Sons, Ltd.