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Semiconductor Materials – 156

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 : (c)

Explanation : No answer description available for this question. Let us discuss.

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