ABSTRACT
Recall from Chapter 2 that for intrinsic semiconductors, that is , semiconductors without any other different atoms added, conduction occurred via electrons in the conduction band and holes in the valence band. For intrinsic material the electrons and holes came in equal numbers , since one conduction electron gave rise to one valence band hole, and we had bipolar (two-carrier) conduction, with the total current being carried by equal numbers of electrons and holes (intrinsic conduction) .
