Scientists just created green solar cells – and they’re working on white, red and additional colors

August 17, 2017 by  
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Do you love solar panels , but hate the color blue? You’re in luck – researchers in the Netherlands have developed a process for making conventional solar panels bright green, and they’re working on developing other colors as well. By making the panels more appealing, they hope to entice more people and businesses to invest in clean energy. Researchers at AMOLF devised a method of imprinting solar panels with silicon nanopatterns that make them appear green. Though the process decreases the efficiency by 10 percent, it’s considered to be an acceptable trade-off if the panels are installed on more buildings. Said Verena Neder, lead author of the paper and researcher at AMOLF, “The black appearance of the [conventional] solar panels is not attractive for many people and a reason to not put solar panels on their rooftop. Making solar cells colored makes it possible to integrate them in an architectural design of houses and full cities, but also to merge them in the landscape.” CleanTechnica reports that to turn the panels green , researchers “use soft imprint lithography to apply a dense array of silicon nanotubes onto the surface of solar cells.” At approximately 100 nanometers wide, each nanotube is carefully shaped to scatter a certain wavelength of light. The cells appear green to observers, and the color is constant regardless of where one is standing. “The structure we made is not very sensitive to the angle of observation, so even if you look at it from a wide angle, it still appears green,” said Neder. Related: Revolutionary glass building blocks generate their own solar energy Because the color can be adjusted by altering the geometry of the nanotubes , the researchers have started planning imprints that create red and blue solar colors. After the three primary colors of light are developed, they will be able to create any color — including white. “You have to combine different nanoparticles, and if they get very close to each other they can interact and that will affect the color,” said Albert Polman, a scientific group leader at AMOLF. “Going to white is a really big step.” The technology could make it possible to create tandem solar cells which are stacked in layers. Each layer would be fine tuned to absorb certain portions of the electromagnetic spectrum. Theoretically, this could result in sunlight conversion efficiencies of 30 percent more. Considering commercially available solar cells are about 20 percent efficient, this could be a game-changer for the renewable energy industry. Affirmed Neder, “The new method to change the color of the panels is not only easy to apply but also attractive as an architectural design element and has the potential to widen their use.” + AIP Applied Physics Letters + AMOLF Via Clean Technica Images via Pixabay and Depositphotos

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Scientists just created green solar cells – and they’re working on white, red and additional colors

Brigham Young University Scientists Create a Tiny Nano-Cupid For Valentine’s Day

February 14, 2013 by  
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Scientists at Brigham Young University (BYU) have used nanotechnology to make the world’s smallest Cupid for Valentine’s Day ! The teeny cupid is made from carbon nanotubes coated with metals and other materials. Just a few hundred nanometers from foot to bow, the tiny cupid is an example of big technology. Read the rest of Brigham Young University Scientists Create a Tiny Nano-Cupid For Valentine’s Day Permalink | Add to del.icio.us | digg Post tags: Brigham Young University (BYU) , carbon nanotubes , Nano-Cupid , nanofilters , nanomaterials , nanotechnology , nanotubes , scientific research , Utah Innovation Awards , valentine’s day , Valentine’s Day Nano-Cupid

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Brigham Young University Scientists Create a Tiny Nano-Cupid For Valentine’s Day

Thermopower Waves:MIT Scientists Discover New Way to Produce Electricity

March 8, 2010 by  
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We’ve written about the possibilities that carbon nanotubes can unlock before, and now, an intrepid team of MIT scientists have discovered a never before known phenomenon using the tubes, which are essentially rolled up sheets of graphene.

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Thermopower Waves:MIT Scientists Discover New Way to Produce Electricity

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