There isn’t always enough room on buildings to locate solar electric [photovoltaic] panels to generate electricity; but what about the windows. Most buildings have plenty of them. Could solar windows help with getting more renewable / clean electricity generated?

Researchers at the Los Alamos National Laboratory, in New Mexico, reported that a thin film of “quantum dots” on everyday glass could be the key to achieving acceptable efficiencies in window-based photovoltaic systems. Researchers at MIT, the University of Toronto and others also are vigorously pursuing the dream of being able to literally spray a thin film of solar cells onto a suitable surface-including glass.

A concept for a solar window using quantum dots

Quantum dots are nanometer-scale semiconductors [about 1-10 nanometers in size…compared to the thickness of human hair at about 25 nanometers ], that can be fashioned into electricity producing solar cells and complete solar panels.

A thin layer of quantum dots could be spread out onto normal window glass; and if applied properly and protected from the elements have a lifetime of up to 14 years. The processing technique for the quantum dot layers allows for the dots to do what they do well individually and also to work together in the transport of electrical charge to the edges of the film where it can then be collected to provide an electrical current.

Quantum dot cells can now generate about 2-8% of incoming sunlight to electrical energy. Traditional single crystal solar panels seen on roofs today typically exhibit 12-15% conversion efficiencies.

The exciting thing about this technology is quantum dots can be customized to absorb different wavelengths of light [i.e. think colors of the incoming light]-so a combination panel of many different customized dots could harvest energy across the entire solar spectrum of incoming light and hence produce large composite conversion efficiencies-probably double or triple the typical efficiencies of silicon panels today.

Editor’s Deep Dive:

• http://www.pv-magazine.com/archive/articles/beitrag/quantum-dots–the-pros-and-cons-in-pv-_100010173/572/
• http://newatlas.com/quantum-dot-solar-cells/32478/
• http://www.lanl.gov/discover/news-release-archive/2016/October/10.11-quantum-dot-solar-windows.php

Thomas Edison said … “I’d put my money on the sun and solar energy. What a source of power! I hope we don’t have to wait until oil and coal run out before we tackle that. I wish I had more years left.”

Time ® is a registered trademark of Time Inc.

So you have a great idea and you have spent time and limited resources to refine that idea into a new prototype. It all works just fine in your makerspace. You have confidence that your prototype can be made into a full blown new product and meet the projected market you envision. So now what?

“Anything that won’t sell, I don’t want to invent. Its sale is proof of utility, and utility is success.” –Thomas Edison

Experienced innovators say now comes the toughest part….getting people to invest in your vision and provide the funds to make that product ready for the marketplace. This is exactly what great shows like “Shark Tank” are all about, where the rubber meets the road, and that new product bumps up against reality. Getting a product to market requires very different skills than building a workable prototype in an isolated makerspace; and it often requires some additional product team members.

Innovation is the true test of new ideas. It is invention plus marketability! Edison had 10,000 employee mouths to feed at his legendary West Orange Labs. He and his new product development staff had to convert ideas to prototypes and then secure the funding to take it to market or raise the money themselves directly. Edison spent a great deal of time in New York City with the likes of J. P. Morgan and others to secure funding for bold new disruptive technologies.

In days past, the chief method of obtaining the necessary funding for breaking into the marketplace was bankers, venture capitalists and perhaps a consortium of investors [like Shark Tank]. This is still true today, but with the ubiquitous Internet, one can use crowdsource funding and a variety of other ways to reach out to potential investors or interested parties.

Check out some crowdsource type funding here:

• https://www.entrepreneur.com/article/228534
• https://microventures.com
• https://www.kickstarter.com

For all the inventors and innovators out there, stay focused. It’s a tough business. Only about 4 out of 160 ideas become a viable product in the marketplace. Do not neglect the marketing/sales/economic end of the equation. Innovation is much more than just cool technology.

“I have more respect for the fellow with a single idea who gets there than for the fellow with a thousand ideas who does nothing.” –Thomas Edison

Keep in mind the Edison business philosophy:

• Think out of the box
• Be entrepreneurial … take risks
• Fail your way to success
• Success demands that you improve your products

Thomas Edison said, “If we all did the things we are really capable of doing, we would literally astound ourselves …”

Time ® is a registered trademark of Time Inc.

People realize solar panels need lots of space on rooftops and unimpeded access to sunlight; but what if our solar drenched roadways could be used to host solar panels? Surely there are huge amounts of surface area here.

A French company, Colas, has come up with a promising way to integrate highly durable solar panels into the surface of roadways/highways. Their new product is called “Wattway.”

Wattway solar panels can stand up to the deadweight of cars and large trucks; and even withstand snow plowing.

The company projects that by 2050, the world’s energy needs will have doubled, making Wattway highly desirable for not only cars, but general energy needs as well. Approximately 20 square meters of the Wattway product can supply the energy needs of a single family home. In development since 2009, the ¼ inch thick solar panels are glued directly atop existing highway surfaces. The solar cells are made using crystalline photovoltaic technology.

Plans are in progress to equip 600 miles of French roadways with this technology. That means those 620 miles could theoretically be good for almost 10 percent of all the homes in France right there.

Other companies are active in the concept too, so keep an eye out for developments. Remember, Edison was big advocate of solar and wind technologies, way back in 1910, having said …

“I’d put my money on the sun and solar energy. What a source of power! I hope we don’t have to wait until oil and coal run out before we tackle that. I wish I had more years left.”

Time ® is a registered trademark of Time Inc.