Intrinsic semiconductors are the bulk properties of the semiconductor material itself, not those of dopants or impurities. Silicon and germanium are the two most commonly used examples of intrinsic se...Intrinsic semiconductors are the bulk properties of the semiconductor material itself, not those of dopants or impurities. Silicon and germanium are the two most commonly used examples of intrinsic semiconductors, as they are elemental semiconductors and were some of the first widely studied and used semiconductors. The electronic structure of semiconductors are the foundation of their unique properties.