Semiconductors is a category of materials that includes silicon, germanium, and others. These materials are notable because they have electrical conductivity that falls between conductors (such as metals) and insulators (such as ceramics). In addition, by adding a small amount of dopant atoms (such as boron or phosphorous), their conductivity can be modified. Semiconductors are used to produce transistors for our electronic gadgets.
Drexel University Materials Science & Engineering Department
A.T. Charlie Johnson Lab
University of Pennsylvania