New Energy Technologies is developing the first-of-its kind SolarWindow™ technology, which enables see-through windows to generate electricity by ‘spraying’ their glass surfaces with New Energy’s electricity-generating coatings – the subject of fourteen patent filings.
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SolarWindow™ generates clean electricity on see-through glass windows, by making use of the energy of natural sunlight and artificial sources such as fluorescent and LED lighting typically installed in offices, schools, and commercial buildings. Under an exclusive world-wide licensing agreement with the University of South Florida, covering fourteen (14) patent applications, together with a Cooperative Research and Development Agreement with the U.S. Department of Energy—National Renewable Energy Laboratory, we currently have six product development goals for our SolarWindow™ technology:
- SolarWindow™- Commercial – A flat glass product for installation in new commercial towers under construction and replace-ment windows;
- SolarWindow™-Structural Glass – Structural glass walls and curtains for tall structures;
- SolarWindow™-Architectural Glass – Textured and decorative interior glass walls, room dividers, etc.
- SolarWindow™-Residential – A window glass for installation in new residential homes under construction and replacement win-dows;
- SolarWindow™-Flex – Flexible films which may be applied directly on to glass, similar to aftermarket window tint films, for retrofit to existing commercial towers, buildings, and residential homes; and
- SolarWindow™-BIPV – Building product components associated with building-integrated-photovoltaic (―BIPV‖) applications in homes, buildings, and office towers.
How do we generate electricity on see-through glass for commercial application in homes, offices, and commercial buildings?
New Energy’s solution is unique to our SolarWindow™ coatings, which:
- Make use of the world’s smallest functional organic solar cells, which measure less than ¼ the size of a grain of rice, and have been shown to successfully produce electricity in a published peer-reviewed study in the Journal of Renewable and Sustainable Energy of the American Institute of Physics;
- Are sprayed on to see-through glass using a novel, patent-pending process presented in AZoNano’s (peer-reviewed, Journal of Nanotechnology Online; Dec. 20, 2009), “Nanotechnology Thought Leaders” series;
- Do not require expensive high-temperature or high-vacuum production methods, but rather, can be sprayed on to glass at room temperature;
- Generate electricity from both natural and artificial light sources, outperforming today’s commercial solar and thin-film technologies by as much as 10-fold; and
- Measure less than 1/10th the thickness of ‘thin’ films (only 1/1000th the thickness of human hair).
Our SolarWindow™ technology — capable of generating electricity on see-through glass windows — is under development for potential application in the estimated 5 million commercial buildings in America (Energy Information Administration) and more than 80 million single detached homes.
SolarWindow™ Electricity Value Estimates*
|Technology||Annual Value of
|Copper Indium Gallium DiSelenide (CIGS) Solar Thin Film||$ 19,260.10|
|Cadmium Telluride Solar Cell Thin Film||$ 16,897.36|
|Triple Junction Amorphous Silicon Thin Film||$ 11,334.44|
(Basis: R&D Measured 08/06/10)
(Basis: Advancement of Lab Prototype)
(Increased Power, Improved Cell Configuration)
(Basis: Max. High-Power Theoretical)
* Modeled power production and economic estimates are calculated using the Company’s proprietary model which has been verified by independent consultants and agencies. Calculated projections, estimates or actual results may vary significantly from modeled power and economic estimates if any modeling parameter changes.
First-Of-Its-Kind Organic Solar Array
Our SolarWindow™ technology utilizes an organic solar array composed of a series of ultra-small solar cells measuring less than ¼ the size of a grain of rice each. They are fabricated using environmentally-friendly hydrogen-carbon based materials, and successfully produce electricity, as demonstrated in a published peer-reviewed study in the Journal of Renewable and Sustainable Energy of the American Institute of Physics.
New Energy’s organic solar array has:
- The same desirable electrical properties as silicon, yet boasts a considerably better capacity to ‘optically absorb’ photons from light to generate electricity, and achieves transparency through the innovative use of conducting polymers;
- Superior optical absorption properties inherent to New Energy’s ultra-small solar cells, enabling development of an ultra-thin film, only 1/1000th the thickness of a human hair, or 1/10th of a micrometer; and
- A key advantage over conventional thin films which are exponentially thicker, measuring several micrometers thick, thus inhibiting transparency.
The ‘Organic’ Edge;
Our ‘Ultra-Small’ Solar Cells Deliver Big Advantages
Organic solar cells, or organic photovoltaics (OPV) have received the attention of the solar energy community as a promising low-cost alternative to typical PV (photovoltaic) solar cells used in today’s solar industry to harness the sun’s energy for renewable electricity.
Solar cells that are currently available are largely made of silicon wafers, an expensive and brittle material that can limit their commercial usability. Other newer generation, lower-cost, flexible thin film solar materials such as amorphous silicon, copper-indium-gallium-selenide, and cadmium telluride, often require high-vacuum and high-temperature production techniques, and are many times thicker than New Energy’s ultra-small solar cells. This generally limits the application of such thin films primarily to stainless steel, an expensive substrate material with limited prospects of delivering transparency.
New Energy’s SolarWindow™ technology makes use of ultra-small organic solar cells, which:
- Allow for the fabrication of transparent solar arrays on a broad range of substrate materials such as glass, plastic, and even paper;
- Are made of natural polymers which can be dissolved into liquid for easy application that does not require expensive and complicated high-temperature or high-vacuum production techniques common to other solar coatings; and
- Organic solar cells can be manufactured in a variety of ways, including screen printing, ink-jet printing and spraying.
Our Unique Ability to ‘Spray’ Solar Cells Onto Glass;
A Low-Cost, High-Speed Solution
In January 2010, scientists developing New Energy’s SolarWindow™ unveiled a novel, patent-pending process for ‘spraying’ solar cells and their related components onto glass – a technical achievement presented in AZoNano’s (peer-reviewed, Journal of Nanotechnology Online; Dec. 20, 2009), “Nanotechnology Thought Leaders” series.
Once scaled-up for use in commercial-scale production, researchers anticipate the ability to spray solar coatings directly onto New Energy’s first-of-its-kind see-through SolarWindow™, currently under development, could provide significant commercial production advantages over today’s thin-films.
Conventional solar films are typically manufactured using expensive and slow manufacturing methods which rely on high-temperature and finicky ‘vacuum deposition’ processes for depositing solar materials onto substrates; the resultant products are simply too thick to allow for transparency, an important consideration in the development of a commercially viable solar-powered glass window.
March 15, 2012 - New Energy Technologies, Inc. and US Department of Energy’s National Renewable Energy Laboratory Develop ‘Invisible Wires’ for Transporting Electricity on SolarWindow™
February 21, 2012 - New Energy and US Department of Energy’s National Renewable Energy Laboratory fabricate institute’s largest-ever organic photovoltaic device.
December 12, 2011 – New Energy researchers successfully fabricated its latest working window prototype using a faster, rapid scale-up process for applying solution-based coatings.
October 04, 2011 – New Energy scientists conducted mechanical stress tests on SolarWindow™, the Company’s spray-on, electricity-generating coatings demonstrated superior durability.
August 22, 2011 – New Energy researchers developed new electricity-generating coatings, which lead to increased transparency and enhanced color for an aesthetically pleasing SolarWindow™ product.
August 3, 2011 – New Energy researchers successfully generated electricity on flexible plastic using the Company’s ‘spray-on’ coating methods.
March 29, 2011 – New Energy enters into Cooperative Research & Development Agreement with U.S. Department of Energy‘s National Renewable Energy Laboratory to advance development of SolarWindow™.
March 15, 2011 – New Energy successfully achieved a three-fold increase in the number of solar cells layered onto glass surfaces — a significant step towards maximizing power output.
February 10, 2011 – New Energy announces appointment of award-winning physicist and SolarWindow™ lead researcher, Dr. Z. Valy Vardeny
February 1, 2011 – New Energy’s researchers have developed a 12”x12” working prototype of the Company’s SolarWindow™ technology, capable of generating electricity on see-through glass. Compared with its 4”x4” predecessor, unveiled in September 2010, this marks a significant achievement for the Company as it continues to work towards producing a commercially marketable product.
January 4, 2011 – New Energy’s researchers discover new compounds which remain see-through, are easy to handle, and can be applied at room temperature and without the use of high-vacuum. Successful integration of the Company’s newly-discovered compounds could lead to improved efficiency, lower production costs and enhanced future commercial manufacturability of SolarWindow™.
September 16, 2010 – Technology Demonstration of working 4”x4” SolarWindow prototype at the University of South Florida, demonstrating the ability to generate electricity from natural as well as artificial light sources. New Energy’s working prototype serves as a model for future advancements to various surface coating techniques and methodologies for applying SolarWindow™ coatings to see-through glass.
January 11th, 2010 – Researchers developed a novel, patent-pending process for ‘spraying’ solar cells and their related components onto glass – a technical achievement recently presented in AZoNano’s (peer-reviewed, Journal of Nanotechnology Online; Dec. 20, 2009), “Nanotechnology Thought Leaders” series.
January 4th, 2010 – New Energy overcame a significant scientific hurdle in creating the first-of-its-kind see-through solar glass by replacing a visibility-blocking solid metal component with environmentally-friendly, non-metallic, transparent compounds.
- Maintain Global Consensus on Climate Change
- Diversify Energy Resources
- Reduce Dependency on Foreign Oil
- Focus on Renewable and Alternative Energy Targets
- A total of 482MW of grid-interactive PV systems were installed in the U.S in 2009 at a capacity-weighted average price of $6.90/W, indicating a total value of $3 billion for the U.S. solar PV market. Source: GTM Research.
- Growth Forecast: Building-integrated and building-applied PV are set to achieve a compound annual growth rate of at least 41% through 2016. Source: Pike Research.
- Driving Green Building Market: Rising energy costs, increasing electricity consumption; Unprecedented level of government initiatives; Heightened awareness and demand for green construction for sustainability and energy efficiency; and Improvements in sustainable materials.
There are nearly 5 million commercial buildings in America, according to the Energy Information Administration, and more than 80 million single detached homes. New Energy’s SolarWindow™ technology is under development for commercial application in such buildings.
You can learn more about Solar Energy and Photovoltaic technology through the Department of Energy U.S. Energy Information Administration, and the National Renewable Energy Laboratory: