LECTURE 38
parts of homework 3B
questions 35c&d, 36c&d, due Friday, December 12
35. one point, from Lectures 36, 37, and 38, a group question, short answers, no pictures necessary
(c) .3 Conductivity.
What are energy bands in solids (.1), and why are they there (.1)? What does an energy gap have to do with electrical conductivity (.1)?
(d) .2 Computer Code.
What is the logic of computer code called (.1)? How does the flow of electric current at a tiny scale implement this logic (.1)?
36. one point, from Lectures 36, 37, and 38, energy and other diagrams associated with Nobel prizes
(c) .4 Conductivity Energy Processes.
Carefully draw and label the energy diagrams for either kind of electrical conductor (.1), an insulator (.1), and both kinds (.2) of ``doped'' semiconductor.
(d) .1 P-N Junction Diagram.
Carefully draw and label a diagram of a p-n junction, indicating how it can be a tiny capacitor ( Bardeen, Brattain, and Shockley, 1956 Nobel). The description in words is in my supplementary notes, but not the diagram. You can use your own lecture notes or draw the picture from the description.
Please email any questions, comments, or suggestions to Professor Bernice Durand, bdurand@theory3.physics.wisc.edu.
Revised November 30, 1997.
Images and layout © 1997, Shane Hamilton