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Nano Cells For Cheaper Solar Energy
The new patented technology is based on inks containing tiny, semiconducting nanocrystals, which can be printed directly onto a variety of surfaces.
By choosing the right combination of ink and surface it is possible to make efficient solar cells using very little material or energy.
The problem with traditional solar cells, Brandon says, is that making them requires many complex and energy intensive steps.
Using nanocrystal inks, they can be manufactured in a continuous manner, which increases throughput and should make the cells much cheaper to produce.
Nanocrystals, also known as quantum dots, are semiconducting particles with a diameter of a few millionths of a millimetre. Because of their extremely small size they can remain suspended in a solution.
This solution can then be deposited onto a variety of materials, including flexible plastics or metal foils. It is then dried to form a thin film.
Brandon and his colleagues discovered that by depositing multiple layers of nanocrystals they can fill in any defects formed during the drying process.
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