A solar cell is made of two types of semiconductors, called p-type and n-type silicon. The p-type silicon is produced by adding atoms—such as boron or gallium—that have one less electron in their ...
These cells generate the energy needed to make the calculator work. (PaulPaladin ... towards the sun all day. Image caption, A house on the Isle of Mull with solar panels on its roof.
Researchers from the University of California Santa Barbara have visualized photoexcited charges traveling across the interface of two different semiconductor materials within a solar cell.