Question
Chemistry Question on The solid state
On doping Ge metal with a little of In or Ga, one gets
A
p-type semiconductor
B
insulator
C
n-type semiconductor
D
rectifier
Answer
p-type semiconductor
Explanation
Solution
When we add some of In or Ga (group 13 element) into Ge (group number 14 element), then electron vacancy is created which is called holes. In this type of semiconductor the charge carrier are holes (positive), so it is calledp-type semiconductor.