Sofab Inks develops nanostructured materials and specialty inks—including high-performance electron transport layers such as its Tinfab material—intended to replace fullerene-based layers in perovskite solar cells. The company reported a manufacturing reliability breakthrough and a 22.3% efficiency on 30-centimeter single-junction modules using its materials. Sofab says its materials increase interface fracture energy by roughly fivefold according to a collaborating research group, and it claims commercial engagement or late-stage discussions with about 90% of the perovskite industry, naming partners such as APS, ASU, Energy Materials Corporation, Halocell, and SunXT. Spun out of the University of Louisville’s Conn Center for Renewable Energy with U.S. DOE support, Sofab plans to scale production to 1x2 meter commercial specs and expand its engineering team to manage the scale-up. The company targets markets beyond utility tandems, including automotive, space, and IoT applications where thin, flexible, and heat-sensitive substrates are required.

Total raised

$6M

Funding rounds

1

Latest round

Seed

Latest activity

Jul 2026