SolFilmTM, A Lot More Power
SolFilm™, a solar panel additive containing gallium arsenide nanowires, promises to dramatically increase the efficiency of silicon solar modules. By adding SolFilm™ on crystalline silicon modules we convert today’s average panel of 15.5 percent conversion efficiency to go beyond the silicon limits of 23-24 percent. That’s more than a 50 percent improvement in performance creating a lower levelized cost of energy for the users. for commercially feasible, highly efficiency multi-junction solar panels
Nanowires concentrate the sunlight without the use of optics or mechanical components. The nanowires just covers a small percentage of the surface area of a solar cell to gain substantial increases in efficiency. In a research paper published in Science in 2013 (DOI:10.1126/science.1230969), researchers from Lund University and Sol Voltaics demonstrated a cell of indium phosphide nanowires covering 12 percent of the surface resulting in an efficiency of 13.8 percent. The results were further certified by the Frauhofer Institute. Sol Voltaics, has today the world-record for photovoltaic conversion efficiency using a gallium-arsenide (GaAs) nanowire array (NWA). As independently verified by Fraunhofer-ISE, Sol Voltaics has demonstrated a 1-sun conversion efficiency of 15.3% in a GaAs NWA solar cell, representing a significant milestone towards providing the solar industry with an efficiency boosting tandem film.
The phenomenon, called Wave Concentrated Photovoltaics (WCPV), combined with the other advantages of gallium arsenide nanowires to lead to ground-breaking performance. Because gallium arsenide exhibits higher performance, we anticipate SolFilm™ to exhibit significantly higher rates of efficiency.
Just as important, SolFilm™ is designed for compatibility with existing production lines and industry practices. Sol Voltaics will ship SolFilm™ to PV companies for integration in crystalline silicon modules for commercially feasible, highly efficiency tandem-junction solar panels.