Sweden’s Sol Voltaics increases solar panel efficiency by 50%

Sweden’s Sol Voltaics increases solar panel efficiency by 50%

Swedish solar technology firm Sol Voltaics is preparing to launch a nano-based development which can boost the efficiency of solar panels by up to 50%.

The company has made a breakthrough by developing PV nanowires using its proprietary Aerotaxy® process. The breakthrough paves the way for Sol Voltaics to bring its SolFilm™ PV solutions to market delivering solar module power boosts of up to 50% at very low cost.

SolFilm is a lightweight, easy-to-adopt photonic film, consisting of billions of gallium arsenide (GaAs) nanowires oriented facing the sun. The nanowires, each of which is a complete solar cell, convert high-energy sunlight directly into power.

Gallium arsenide, previously seen in space and concentrated solar projects, has long held great potential for the mainstream solar industry. However, up to now, its high fabrication costs have prevented economical fabrication of large solar panels. Manufacturing nanowires with Aerotaxy dramatically reduces the required amount of GaAs and removes the need for a crystalline support wafer, significantly lowering material costs..

“Producing solar nanowires through Aerotaxy is the key to manufacturing our SolFilm,” says

Swedish solar technology firm Sol Voltaics is preparing to launch a nano-based development which can boost the efficiency of solar panels by up to 50%.

The company has made a breakthrough by developing PV nanowires using its proprietary Aerotaxy® process. The breakthrough paves the way for Sol Voltaics to bring its SolFilm™ PV solutions to market delivering solar module power boosts of up to 50% at very low cost.

SolFilm is a lightweight, easy-to-adopt photonic film, consisting of billions of gallium arsenide (GaAs) nanowires oriented facing the sun. The nanowires, each of which is a complete solar cell, convert high-energy sunlight directly into power.

Gallium arsenide, previously seen in space and concentrated solar projects, has long held great potential for the mainstream solar industry. However, up to now, its high fabrication costs have prevented economical fabrication of large solar panels. Manufacturing nanowires with Aerotaxy dramatically reduces the required amount of GaAs and removes the need for a crystalline support wafer, significantly lowering material costs.

“Producing solar nanowires through Aerotaxy is the key to manufacturing our SolFilm,” stated Erik Smith, CEO of Sol Voltaics. “The nanowires are grown such that the top and bottom of the wire have opposite doping profiles. This makes each nanowire a fully functional solar cell, with a a junction along the length of the wire. Whether used by module manufacturers as a single-junction, high-efficiency, low-cost solution or as a boosting technology, we believe SolFilm will usher in a new age of solar power efficiencies.”

To help commercial this technology the company has raised $21.3 million, effectively the largest finance package for a European solar technology company since 2015. The cash will be used to accelerate the rollout of the firm’s solar efficiency technology,SolFilm.

Investors in the latest finance round include Norwegian firm Watrium AS, Blue Marlin AB, and Nano Future Invest. It takes the total raised for Sol Voltaics over the last 12 months to $38 million.   

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