1. (3 points)
Explain why a transient current flows when you touch a piece of n-type semiconductor to a piece of p-type semiconductor. What is the direction of current flow? What stops the current after a while? Similar questions are in Bloomfield , page 439.
2. (8 points)
Melissinos , exercise 1.1.
3. (8 points)
Melissinos , exercise 1.3. Note that part (a) is closely related to part (c) of exercise 1.1.
4. (6 points)
Melissinos , exercise 1.4. Accurate plots are expected, (a) for E between 1 and 2 eV and (b) for E between 0.8 and 1.2 eV.