Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
In which of the following statements, the obtained impure semiconductor is of p-type ?
A
Germanium is doped with bismuth
B
Silicon is doped with antimony
C
Germanium is doped with gallium
D
Silicon is doped with phosphorus
Answer
Germanium is doped with gallium
Explanation
Solution
A p -type semiconductor is obtained by the dopping of a trivalent atom. Gallium is trivalent element, so germanium is doped with gallium.