California-based Tandem PV has announced the acquisition of nexTC Corporation, a developer of advanced thin-film metal oxide coating processes based in Corvallis, Oregon.
The acquisition will see nexTC founder and CEO Cory Perkins, Ph.D. joining TandemPV as it integrates the nexTC technology into its 40 MW commercial demonstration production line, on which it is producing large-format tandem solar panels for customer validation and market trials.
“We’ve worked with Cory for years and know firsthand the value of his expertise in oxide thin films, which are critical to building durable, high-performing perovskite modules,” said Tandem PV CEO Scott Wharton in a statement. “Bringing Cory’s expertise and nexTC’s technology into Tandem gives us greater control over a core part of the manufacturing process and allows us to optimize it directly on our production line as we scale.”
The role of transparent oxide coatings
In TandemPV’s perovskite-silicon tandem solar panels, ultrathin coating layers are used to manage charge transport while allowing sunlight to pass through the top perovskite glass layer to the conventional silicon cell beneath. The company says these layers are vital to overall module efficiency, durability and manufacturability.
nexTC was founded in 2018 as a spinout from an Oregon State University research center. While at the University, Perkins’ published research generally focused on finding ways to create high-quality metal oxide thin films using liquid solutions (rather than vacuum deposition).
Both nexTC and Tandem PV were founding industry members of the United States Manufacturing of Advanced Perovskites (US-MAP) Consortium, a public-private partnership between major research institutions, private industry members and the National Lab of the Rockies.
The consortium brings together domestic companies — including other perovskite developers like Swift Solar, Cubic PV and Caelux — to cooperate on precompetitive technical obstacles and guide research efforts.
Tandem PV’s growth trajectory
The nexTC acquisition represents another step in Tandem PV’s efforts to commercialize tandem solar technology, which combines a perovskite-bearing top glass layer over a traditional silicon solar module bottom layer.
To date, the company says it has raised $100 million in capital from investors including Eclipse, Constellation Energy and the U.S. Department of Energy. The company also recently expanded its leadership team by adding former U.S. Energy Secretary Jennifer Granholm to its board of directors.
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