Miami-based NAED Energy Holding said its PV-1 PECVD-V, a vertical in-line deposition platform for solar cell manufacturing, is rated at 96,000 wafers per hour, double the 48,000 wafers per hour of its previous XL-class platform.
The platform combines plasma-enhanced chemical vapor deposition (PECVD) and physical vapor deposition (PVD) on a single shared-carrier line. Wafers travel upright through each stage, and to reach the second side, the entire carrier is lifted and turned 180 degrees rather than the wafers being flipped individually, which NAED said reduces direct wafer handling between process steps.
NAED said the line is designed to produce its T2X two-terminal perovskite/heterojunction (HJT) tandem cell, which targets 30% cell efficiency, and that it plans to sell the cells for terrestrial and space applications alongside glass-glass modules starting at 600 W.
According to the company, six of the line’s 13 process tools are complete and the remaining seven are in production. NAED said it designs the tools in-house, machines them in its own facility in the United States, and is now taking reservations for production tool slots from manufacturers.
“Going vertical let us double throughput and build the line around tandem cells from day one, rather than retrofitting tandem onto a platform designed for something else,” said Malcom Longair, media and development lead at NAED.
Rated figures
NAED said the 96,000 wafers-per-hour figure is a rated throughput and that 30% is a target efficiency, with full specifications and measured station test data available to qualified manufacturers on request. The release does not specify wafer size, yield or uptime, and does not name customers, investors, executives or the location of the production facility.
The company said the line, the carrier-turning mechanism, the wafer-retention carrier and the T2X cell are the subject of pending US patent applications, and that its intellectual property has been appraised at $179 million under an ASC 820 Level 3 fair-value methodology, an accounting standard that values assets using unobservable inputs such as management assumptions. NAED did not name the appraiser.
NAED describes itself as an aerospace, engineering and utility-energy company with operations in South Florida, New York and Nevada and a presence in Indonesia.
Perovskite-silicon tandem cells have already exceeded NAED’s target in the lab. Longi set a world record of 35.5% efficiency for a perovskite-silicon tandem cell in July. In the United States, Tandem PV launched commercial perovskite-silicon manufacturing in California in April and has since announced a 30.4%-efficient demonstration module.
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