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A -- LICENSING AGREEMENT FOR ENCAPSULATING MATERIALS FOR PHOTOVOLTAIC DEVICES SOL DW-120 POC Ken Touryan (303) 275-3009 WEB: NREL Business Venture Center, http://www.nrel.gov/businessventures/lic.html. On behalf of the U.S. Department of Energy, the National Renewable Energy Laboratory (NREL) anticipates negotiating one or more license agreements with U.S. companies interested in commercializing encapsulating materials for photovoltaic devices. Researchers at NREL have developed a substantially clear and colorless encapsulating material for photovoltaic devices that remain clear and colorless for a long lifetime. The new materials protectively encapsulates operating photovoltaic devices while retaining light transmittal properties necessary for efficient device operation. The new NREL encapsulating material includes polymer and curing agent components plus primer, ultraviolet-light stabilizer, and anti-oxidant additives. It can also be applied in situations where long-lifetime, clear-coating is essential. Unlike the extensive previous efforts to modify existing ethylene-vinyl acetate formulations, the NREL encapsulant is substantially free of ultraviolet light absorbers. Although always included in previous compositions to convert ultraviolet light energy to heat energy, ultraviolet light absorbers have been found to decompose photochemically, leading to browning of the encapsulant and interference with light transmittal. Contact NREL Business Ventures Center (303) 275-3008. (0252)

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