This approach has been tried before and was used to make a solar cell with record efficiency[0]. This approach might be needed to get up to 50% efficiency. [0]h

This approach has been tried before and was used to make a solar cell with record efficiency[0]. This approach might be needed to get up to 50% efficiency. [0]http://www.electronicproducts.com/Sustainable/Solar/Prism_device_helps_scientists_break_solar_efficiency_record.aspx http://www.electronicproducts.com/Sustainable/Solar/Prism_de...