The award is a Tier 2 grant under the Sunshots Incubator 7 Program and is designed to accelerate the transition to commercial production. It is a follow-on to the Tier 1 award given to Stion in February 2011. As part of Tier 1, Stion successfully advanced its technology into commercial prototype stage and produced tandem junction prototype modules at 18.8% aperture efficiency, the highest for any module prototype based on thin-film technology.
We are extremely excited to continue working with DOE to help address Americas critical need for clean, secure sources of energy, said Chet Farris, Stions President & CEO. Our progress on the tandem technology demonstrates that thin films can achieve industry-leading efficiencies on a scalable, low-cost production platform.
Stions unique approach to thin film PV leverages proprietary materials and device expertise along with a robust, high-volume manufacturing process based on readily available, standardized equipment. Stion began shipments in March of products based on its single junction CIGSS technology, and has produced commercial modules with as high as 15.6% aperture efficiency.
The tandem junction module would increase efficiency by enabling broader and more effective harvesting of available light using an additional thin film device. It utilizes mechanically stacked top and bottom devices to eliminate the design and manufacturing challenges associated with traditional junction integration, and maintains the same glass / glass packaging design as Stions current commercial modules.