Solar cell window

I had brilliant idea the other day. I though: "Let's make a special windows that would be like a two-way mirror but instead of a mirror on the bright side, it would be a solar cell that convert some light into usable energy." All those building and skyscraper with curtain wall could be self-sustained during the day.

Sadly I wasn't the first to have this idea. Scientist at Brookhaven National Laboratory and Los Alamos Nation Laboratory are already fabricating transparent films which are able of generating an electrical charge by absorbing light.

You can read more about it here: http://www.physorg.com/news/2010-11-transparent-material-power-generating-windows.html