Researchers create new “smart windows” that block out the sun and turn sunlight into electricity
By David Williams // Sep 11, 2018

Have you ever heard of windows that can turn from transparent to opaque, and thereby block out light from the sun? So-called smart windows have been around for quite some time now. Now one research team says they have made a quiet breakthrough that will allow for the construction of highly efficient smart windows that can also successfully generate solar energy at the same time.

Brighteon.TV

Using much of previously available research and methods as inspiration, a team of researchers from the University of California led by Peidong Yang has managed to come up with a solution that creating smart windows with none of the conventional drawbacks. For reference, a standard smart window is known to suffer from what is known as the methylamine chemical reaction, which causes inconsistent performance in perovskite-based solutions. The new method not only improves upon old solutions, but it also avoids these complicated drawbacks.

According to a report on the new study, perovskites are the major key when it comes to creating smart windows. It is said that perovskites are the ones that grant smart windows with the ability to stay transparent in cool temperatures but turn dark once the heat gets turned up by sunlight. It's so essential, in fact, that companies like Boeing have already been using it for at least over four decades.

It is said that the best-known perovskites can convert more than 22 percent of the energy found in sunlight to electricity whenever they are in use. This is an impressive feat, considering that silicon solar panels only manage to convert a little bit more at 25 percent. The challenge for researchers then is to come up with a solution that not only works as a proper smart window but also retains this somewhat acceptable level of solar energy efficiency.

What the researchers led by Peidong Yang created is nothing short of amazing. In a research paper that was published in the journal Nature Materials, the research team lays out the details of their experiments, which they say has resulted in a new cesium-based perovskite solar window. They say that this new type of solar window can turn opaque in response to the heat of the sun and then go back to being transparent when the sun goes down, or the temperature gets cool enough. At the same time, the new cesium-based perovskite window is also said to produce electricity from interacting with sunlight, but not suffer from a methylamine reaction.

All of this is to say that there may finally be a working solution for smart windows that can also gather solar energy efficiently. According to the report on the study, the new type of smart window the researchers created can switch back and forth between opaque and transparent repeatedly without suffering a drop in performance. And as one expert on the subject states, it's nothing if not an elegant solution.

"It's an attractive idea that you would have the solar cell capability and the smart window at the same time," said Michael McGehee, a materials scientist from Stanford University. As someone who studies both smart windows and perovskite solar cells, he has seen numerous solutions but still found this new one quite commendable. Although they are not perfect, the researchers behind them are looking for ways to improve them for future uses. For now, the focus is on improving the solar conversion efficiency. And once it gets past a certain level of performance, it may just be the next best thing in the world of solar power for the home.

Read more about solar power solutions at Power.news.

Sources include:

ScienceMag.org

Nature.com



Take Action:
Support NewsTarget by linking to this article from your website.
Permalink to this article:
Copy
Embed article link:
Copy
Reprinting this article:
Non-commercial use is permitted with credit to NewsTarget.com (including a clickable link).
Please contact us for more information.
Free Email Alerts
Get independent news alerts on natural cures, food lab tests, cannabis medicine, science, robotics, drones, privacy and more.

NewsTarget.com © 2022 All Rights Reserved. All content posted on this site is commentary or opinion and is protected under Free Speech. NewsTarget.com is not responsible for content written by contributing authors. The information on this site is provided for educational and entertainment purposes only. It is not intended as a substitute for professional advice of any kind. NewsTarget.com assumes no responsibility for the use or misuse of this material. Your use of this website indicates your agreement to these terms and those published on this site. All trademarks, registered trademarks and servicemarks mentioned on this site are the property of their respective owners.

This site uses cookies
News Target uses cookies to improve your experience on our site. By using this site, you agree to our privacy policy.
Learn More
Close
Get 100% real, uncensored news delivered straight to your inbox
You can unsubscribe at any time. Your email privacy is completely protected.