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Monday, July 16, 2012

Solar Cells Printed on Aluminum Foil Cost Less

Nanosolar has completed a 1-megawatt, ground-mounted solar panel installation at a military base in California. The company's management are the inventors of a solar technology that prints metallic, nanoparticle inks on huge rolls of aluminum foil.

The high-throughput, roll-to-roll silkscreen-like printing process coats aluminum foil with a proprietary ink made of copper, indium, gallium, and selenium (CIGS). This process avoids the vacuum deposition that has been characteristic of many thin-film implementations and kept their cost high. The Nanosolar Utility Panel is, the company claims, the first solar panel to be developed for utility-scale deployment. Panels are longer, have higher power output, install faster, and require less cabling and mounting material. Nanosolar claims that its panels cost as much as 40 percent less per watt compared to conventional thin-film panels.

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