18 Jun '12, 7pm

Building Integrated Photovoltaics

Building Integrated Photovoltaics

Silicon, with the substrate, is added to a vacuum chamber during the process of thermal vacuum deposition and is then resistively heated. During the vaporizing of the silicon, a thin film is created by the condensing of the gaseous silicon on the substrate that then cools. The vacuum increases the silicon’s vapor pressure and removes molecules of atmospheric gas, as it may have collided with the silicon that has been vaporized and could then stop it from getting to the substrate. Film created using this technique can actually be only 10 nanometers in thickness. A type of vacuum deposition known as molecular beam epitaxy is capable of producing layers that are a mere single atom in depth.

Full article: http://cleantechnica.com/2012/06/18/building-integrated-p...

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