156. A p-type semiconductor is :
1. A silicon crystal doped with arsenic impurity.
2. A silicon crystal doped with aluminium impurity.
3. A germanium crystal doped with boron impurity.
4. A germanium crystal doped with phosphorus impurity.
(a)a, c are correct (b)a, d are correct (c)b, c are correct (d)b, d are correct
Answer
Answer : (c)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Semiconductor Materials » Exercise - 4177. A Silicon crystal becomes p- type when - (a) Code to very low temperature (b) Alloyed with germanium (c) Doped with boron atoms (d) Doped with arsenic atom
Semiconductor Materials » Exercise - 3150. P-type semiconductors are : (a) +very charged (b) Electrically neutral (c) Obtained when phosphorus is added as impurity to silicon or germanium (d) Obtained when arsenic is added as impurity to germanium or silicon