10 Apr '12, 10am

Black Solar Cell Absorbs 99.7% of All Light

Scientists over at Natcore Tech have created what is now the "blackest" solar cell to date. While that might sound as trivial as creating a white iPhone, this is a fairly huge advancement in the world of solar technology. With an average reflectance of 0.3%, these black silicon wafers absorb more light than any other out there, which means more of the sun's energy is actually converted into energy. By the way, reflectance is the ratio of reflected light to that of which actually hits the surface. So a reflectance of 0.3% means that only 0.3% of all light is reflected from the solar cell's surface and that the remaining 99.7% is absorbed. © Natcore Technology This breakthrough makes industry standards such as anti-reflective coatings now obsolete. Those coatings perform poorly anyway, especially during morning and afternoon hours when the sun is at an angle. The black solar...

Full article: http://www.treehugger.com/solar-technology/black-solar-ce...

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