Question

Boron when added as an impurity, into the silicon, produces n-type semiconductor.

(a) True

(b) False

This question was posed to me during an interview.

My question is from Extrinsic Semiconductor topic in portion Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

Answer 1

Right choice is (b) False

Explanation: When a pentavalent impurity is added as an impurity to silicon, it produces n-type semiconductor. In n-type semiconductors, electrons are majority charge carriers, whereas the holes are minority charge carriers.