Q. Name the element used as impurity to produce N-type semiconductor __.

A
Gallium
B
Boron
C
Aluminium
D
Arsenic
Solution:

An N-Type semiconductor is created by adding pentavalent impurities like phosphorus (P), arsenic (As), antimony (Sb), or bismuth (Bi). A pentavalent impurity is called a donor atom because it is ready to give a free electron to a semiconductor. The impurities are called dopants.

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