When arsenic is added as an impurity to silicon, the resulting

Home » Modern Physics » Semiconductor Electronics : Materials, Devices and Simple Circuits » Question

When arsenic is added as an impurity to silicon, the resulting material is

1. n-type semiconductor
2. p-type semiconductor
3. n-type conductor
4. insulator

Correct Option: A

Arsenic contains 5 electrons in its outermost shell. When Arsenic is mixed with silicon there is one electron extra in silicon crystal. Hence, such type of semi conductor is n-type semi conductor.