Question

The ratio of the number of free electrons to holes ne /nh for a material is less than

one. Name the type of semi- conductor to which it belongs​

Answer 1

A is intrinsic semiconductor while B is a p-type semiconductor.

• Where A and B are two different semiconductors.
• An intrinsic semiconductor is an undoped semiconductor or a pure semiconductor without any dopant present in it. The properties of this semiconductor is decided by its own properties instead of the properties of the dopants.
• P type semiconductor, have their acceptor energy level close to the valence band and far from the conduction band.