Physics 315:

Exmples of qualitative questions relating to material in handouts:

Do electrons in tetrahedral bonding states correspond to the conduction or the valence band in Si and Ge?

What is the difference between a direct and an indirect bandgap in a semiconductor?

What is an n-type? p-type? semiconductor.

What is The Mőssbauer effect?

What is an intrinsic semiconductor?

Why is the the number of conduction electrons in an intrinsic material proportiona to

exp(-ßEgap/2) and not exp(-ßEgap)?

Describe the setup for the Hall effect?

Why does the pn junction act like a rectifier?

What is the mechanism by which the chemical potential stays close to the top of the valence band on the p-side, and close to the bottom of the conduction band on the n-side of an pn junction?

State Bloch's theorem.