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Ferro Awarded U.S. $1M Grant for Solar Cell Research
Jan 15, 2010
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Ferro Electronic Materials, a supplier of materials for fabricating photovoltaic solar cells, has been awarded U.S $1 million by the Ohio Department of Development (ODOD) to develop advanced durability sealing systems for solar cells.

In this project, the supplier will engineer a vitreous frit system to provide reliable airtight and watertight seals for second- and third-generation thin-film solar cells. Ferro will collaborate with the Edison Welding Institute, StrateNexus Technologies, and The Ohio State University, all of Columbus, Ohio, U.S., in developing, testing, and commercializing this new technology.

If successful, the new sealing materials will enable Ferro to solve a significant problem with second- and third-generation thin-film solar cells. As with all solar cells, thin-film cells require a hermetic seal to operate reliably for their expected lifetimes of 20-plus years. This can be a problem because most current thin-film solar cell modules are designed to be sealed with organic sealants that typically lose their hermeticity in time, especially if exposed to sunlight containing ultraviolet (UV) radiation. The problem is aggravated by exposure to daily and seasonal temperature fluctuations that can further weaken the seal.

Ferro proposes to replace the organic seal with technology similar to its glass frit sealing materials presently used in thick-film solar cells and that are field-proven to last well beyond the cells’ expected lifetimes. The technical challenge is that thin-film cells are extremely temperature sensitive, and the current frit technology requires high firing temperatures to create the seal. The goal is to create a glass frit material that can create the required seal at lower temperatures and that can be activated by laser-based and ultrasonic energy systems.

“One of Ferro Corporation’s core technical competencies is the design and manufacture of custom glasses,” said Steven Florio, chief technology officer for Ferro’s Electronic, Color, and Glass Materials division. “We believe this strength in glass technology will enable Ferro to rapidly drive the development of the frits required for this critical new application.”

Funding for the project is provided through the Ohio Third Frontier Photovoltaic Program, which supports research and development that addresses the technical and cost barriers to commercialization of photovoltaic components and systems in Ohio. The awards are contingent upon State Controlling Board approval.

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