We've been highlighing our favorite solar innovations for a while. In fact one of our readers' all-time favorite posts is about a spray-on technology.  Although that particular product isn't quite ready for general market release, there are some other impressive ones that are. Some of the most efficient and amazing improvements are from the world of nanotechnology. Photovoltaic laminates were invented in the 70's, so it's pretty well expected that there will be ongoing improvements in the ways that PVs are developed and produced. In particular, there's a fascinating thin film technology that comes from Nanosolar in California, where they make solar cells into an ink that they spread on foils. They coat the foils with the ink using a method like a printing press. This speeds up production

faster than your traditional methods. It is solar cell production in great mass. Silicon wafers are fragile, where thin film is ink. Both act as semi-conductors to create electricity. Thin is the operative word, as these films are 100x thinner than the traditional silicon. It is also interesting that thin film nanotechnology reduces required silicon by 90%, which therein held much of the high cost. However, the heavy glass that protects thin film ink is somewhat pricey. Check out www.nanosolar.com for the pdf and overview on thin film nanotechnology photovoltaics.  You can also find a video posted on JetsonGreen a while back that highlights what they are up to!   What are some of your favorite new technologies in solar? 

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PHOTOVOLTAICS AND NANOTECHNOLOGY