Bifacial solar photovoltaics – A technology review

Bifacial solar photovoltaics (PV) is a promising mature technology that increases the production of electricity per square meter of PV module through the use of light absorption from the albedo. This review describes current state-of-the-art bifacial solar PV technology based on a comprehensive examination of nearly 400 papers published since 1979 (approximately 40% are referenced in this work) focused on illuminating additional research and development opportunities to enhance and assess performance and expand bifacial technology׳s overall contribution within a rapidly expanding global solar market. Research and development efforts on bifacial PV should continue to emphasize improved efficiency in cells, module reliability and deployment configuration of bifacial arrays in a PV plant to co-optimize front-backside energy production during the entire day for fixed and tracking systems. Research on improved conversion efficiencies associated with monofacial PV cells will also continue to benefit bifacial PV performance. Standardization of certification procedures for bifacial PV technology performance efficiency and expansion of niche applications is required to promote wider deployment worldwide.