Revolutionizing
Back-Contact Solar

Module interconnection to take silicon back-contact cells into low earth orbit.

Technology

Sunflex is an agile, R&D focused group of industry-leading experts, scientists, and engineers pushing the boundaries of efficiency and innovation in silicon-based solar applications.

Innovation

SunFlex Aetherfoil modules are designed for low-earth orbit (LEO) applications. Conductive aluminum foil carries the current through the
module and is laser-welded to the N and P contacts on the rear of a silicon back-contact cell. This combination of materials and process results in an ultra light, high-power BOM able to be patterned into custom layouts on complex wing/vehicle geometries, without stringing or soldering.

Value

By enabling low-cost, P-type silicon cells for space applications, SunFlex unlocks a scalable path to affordable space power—leveraging materials and manufacturing infrastructure already available at scale from the terrestrial supply chain.

Enabling new pathways in the solar industry that were previously blocked by steep costs.

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Performance

Demonstrating >22% module efficiency

Affordability

The power of back-contact at the price of PERC

Aesthetics

Stunningly sleek designs with the clean look of IBC cells- perfect for BIPV and VIPV.

Durability

Proven in IEC 61215, UL 61730, and NREL C-AST.

Integration

Rigid, flexible, curved, and foldable- with the option of custom cell cuts and layouts.

Manufacturing

Eliminating soldering and wet processes while reducing BOM costs.

Technology

A new way to interconnect back-contact, silicon cells for LEO applications

Sunflex’s Sunfoil module technology interconnects silicon back-contact solar cells - like MTW and IBC- with patterned, embossed aluminum foil.

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It's All About the Metal

All the efficiency, at a fraction of the cost

Aluminum foil—the new gold standard.

Our Sunfoil module technology interconnects back-contact cells with aluminum foil, enabling premium efficiency and durability.

Aluminum Foil

Low Cost
Conductive
Ductile

Embossing

No Paste
No Solder
No Worries

Laser Welding

Rapid
Robust
Versatile

Performance

Built to withstand the extremes of space

SunFlex enables low-cost, P-type silicon cells to withstand the extreme thermal environment of space, with extreme thermal cycling tests conducted between −100°C and +100°C. By combining terrestrial-scale materials with space-ready reliability, we’re opening a new path to affordable, scalable space solar.

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Sunfoil is compatible with any module flavor.

From BIPV to VIPV, rigid modules to foldable and flexible- Sunfoil is the ideal solution across multiple industries and form factors.

Value

Advantages in LEO Applications

Modules are flat and lightweight, with no tabbing/stringing required.

Almost every satellite panel and array is a unique design- Cells must be patterned in irregular shapes and locations, in order to make the most of available surface area.

SunFlex Aetherfoil modules enable a simple and automated process for the rapid design and integration of satellite solar arrays with complex shapes, using readily-available materials with robust supply chains.

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All About the Innovation

License our technology in your market.

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Low Earth
Orbit

Flat, lightweight modules with no
tabbing or stringing required means Sunflex tech can go where other tech can’t.

Vehicle Integrated

Range extension, auxiliary power, refrigerated transport and more—our technology enables integration of the highest efficiency solar cells for space-constrained applications like vehicle body panels.

Building Integrated

Architects and BIPV module designers can increase module power with aesthetically stunning IBC cells in custom form factors and layouts—enchancing any project.

Foldable & Flexible

Aluminum foil is lightweight and ductile, making it a phenomenal conductive hinge. Let us help you take your design to the next level with back-contact cells.

The team makes it happen

Ground-breaking technology by inspirational individuals.

Meet Our Team

Founded by those who believe in the power of solar.

SunFlex Solar was formed in March 2020 to commercialize breakthrough innovations developed at Arizona State University within a Department of Energy grant. Our team is dedicated to decarbonizing our world and increasing the pace of photovoltaic adoption while reducing cost barriers to high-efficiency solutions.