Question

Even though the p-type and n-type semiconductors have holes and electrons respectively as majority charge carries, why are they electrically neutral? Explain.

Answer 1

The p-type and n-type semi conductors are formed when the impurity atoms, which themselves are electrically neutral, are added to pure semiconductor which is also electrically neutral. Hence the p or n-type semiconductor formed is electrically neutral. The letter p in p-type semiconductor indicate the majority charge carriers and not the net charge in the semiconductor.