Credit: Image courtesy of Molecular Foundry, Berkeley Lab
A 3-D rendering of a thin-film cadmium telluride solar cell. The newly developed imaging technique shows how a solar cell’s surface and bulk “light up” (yellow) when a cadmium telluride solar cell is working (darker blue regions indicate no activity).Light penetrating from the top into the solar cell is converted to electricity more efficiently in the yellow regions of the device.