hi can someone give me an explanation on semiconductors?
those valance band and conductor bands and holes and stuff.. i do not understand..
thanks=)

Question

anonymous · Answer

semiconductors have a lot of free electrons to give up. That's why that material is used in microprocessor industry and even solar panels and such

anonymous · Answer

also in PCB printed circuit boards...

anonymous · Answer

well resistance is the obstruction to the flow of current..and the conductance is its reciprocal i.e it gives opposite meaning to the resistance...and hance semi conductors are those materials that has partial resistance and partial conductance in it..

radar · Answer

In semiconductor material such as germanium and silicon a crystal lattice structure exists and a bond forms in the outer ring of electrons called a valence bond which happens to be (I think) 4.  An impurity is added such as arsenic other element that causes  either and extra electron or a deficient electron (depending on the type of impurity)  This provides the carrier for current.  A study of quantum is helpful.  the principle of semiconductor operation is accomplished by "minority carrier injection"  It would take a lot of study to fully understand.  I attended a 4 week course on transistors back in 1971 so a lot has faded from my memory.