Exam 1: Introduction to Semiconductors

The energy required to cause a valence electron to escape from the atom's influence is called the

Silicon doped with impurities is used in the manufacture of semiconductor devices.

A semiconductor is said to be a _ type of material

Silicon and germanium contain _ valence electrons

The energy difference between the valence band and the conduction band in a substance is called the thermal gap.

The following are all semiconductors except

Electrons orbiting the nucleus of an atom are grouped into energy bands known as

The process of a conduction electron falling into a hole is called

The majority carrier in a p- type semiconductor is

Raising the temperature of an intrinsic semiconductor will

Holes are the majority carriers in

Hole flow occurs in the conduction band.

An intrinsic semiconductor has

The type of chemical bond that occurs in copper is

Conduction in the conduction band of semiconductors is by the movement of

The typical barrier potential for silicon is 0.3 V.

In the quantum model of the atom, an orbital is a discrete energy level where an electron is found.

A trivalent atom is also called

The valence band has lower energy than he conduction band.

In a pn junction, the layers where there are few charges near the junction is called the