February 19, 2008
Pennsylvania State University researchers built a solar cell that mimics photosynthesis to make hydrogen directly from water.
The device works much like a Gratzel solar cell, using sunlight to knock electrons off dye molecules, but instead of creating a current, the electrons are shuttled from the dye into a catalyst to split water molecules. The device splits water a thousand times faster than in other dye-based cells.
The… read more