Intrinsic semiconductor is an under dropped semiconductor most common intrinsic semiconductors are silicon (Si) and Germanium (Ge). Silicon and Germatium both have four valance electron and these valance electron res responsible for the conduction – Properties of as semiconductor if intrinsic semiconductor exited temperature increase the covalent bond break which result in more and more number of free electron However the number of electron in intrinsic semiconductor is always equal to number of holes.