Buckminsterfullerene is a spherical molecule of 60 carbon atoms. One of the most exciting uses of C60 is in plastic solar cells. Solar cells can be made by mixing polymers that are semiconducting with functionalized fullerenes in a solvent then casting the "ink" onto electrodes. The semiconducting polymer absorbs solar radiation and transfers and electron to the fullerene creating a positive and negative charge in the solar cell. These charges can then exit through the electrodes creating an electrical current. The solar cells made with C60 can be mechanically flexible and are being commericalized by many companies including Konarka