Semiconductor

Front

What is a semiconductor?

Back

A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator. Its conductivity can be modified by adding impurities (doping) or by changing temperature.

Front

Give an example of a semiconductor material.

Back

Silicon is a common example of a semiconductor material.

Front

What happens to the conductivity of a semiconductor as temperature increases?

Back

The conductivity of a semiconductor increases with increasing temperature.

Front

What are the two types of extrinsic semiconductors?

Back

The two types of extrinsic semiconductors are n-type and p-type.

Front

What are the charge carriers in a semiconductor responsible for electrical conduction?

Back

The charge carriers responsible for electrical conduction in a semiconductor are electrons and holes.

Front

What characterizes an n-type semiconductor?

Back

An n-type semiconductor has an excess of electrons.

Front

What characterizes a p-type semiconductor?

Back

A p-type semiconductor has an excess of holes.

Front

What is the role of doping in semiconductors?

Back

Doping is the process of adding impurities to a semiconductor to change its electrical properties, enhancing its conductivity.

Front

What is the difference between intrinsic and extrinsic semiconductors?

Back

Intrinsic semiconductors are pure materials without any significant dopants, while extrinsic semiconductors are doped with impurities to enhance their conductivity.

Front

What is a hole in the context of semiconductors?

Back

A hole is the absence of an electron in a semiconductor, acting as a positive charge carrier.