Stand-Alone Photovoltaic (PV) Powered Electrochromic Window

Technology Description A variable transmittance double pane window includes an electrochromic material that has been deposited on one pane of the window in conjunction with an array of photovoltaic cells deposited along an edge of the pane to produce the required electric power necessary to vary the effective transmittance of the window. A battery is placed in a parallel fashion to the array of photovoltaic cells to allow the user the ability to manually override the system when a desired transmittance is desired.

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Browse related Patents, Trademarks and Copyrights U.S. Patent 5,377,037 - Electrochromic-Photovoltaic Film for Light-Sensitive Control of Optical Transmittance U.S. Patent 5,716,736 - Solid Lithium-Ion Electrolyte U.S. Patent 6,441,942 - Electrochromic Projection and Writing Device U.S. Patent 5,107,649 - Compact Vacuum Insulation Embodiments U.S. Patent 6,169,246 - Photovoltaic Devices Comprising Zinc Stannate Buffer Layer and Method for Making Read a complete description (PDF 275 KB) about how this technology has been applied. Download Adobe Reader. See the full U.S. Patent for this technology. NREL is looking for an organization to develop and commercialize this innovative technology. Interested organizations may consider developing/commercializing this technology through a license agreement, Cooperative Research Agreement, or Work for Others agreement. Please contact Richard Bolin at (303) 275-3028 for licensing, CRADA, and Work for Others opportunities.

Type of Offer: Licensing



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