ECE3040_Homework1

# ECE3040_Homework1 - (a a bcc lattice(b an fcc lattice 3 Pierret Problem 1.5 parts(a)–(d(20 points 4 Pierret Problem 1.7 parts(a(d(f and(g(20

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ECE 3040B: Homework #1 Due Date: September 9, 2011 Page 1 of 1 G EORGIA I NSTITUTE OF T ECHNOLOGY S CHOOL OF E LECTRICAL AND C OMPUTER E NGINEERING ECE 3040B: Microelectronic Circuits Fall Semester 2011, Homework #1 Homework Due Date: Friday, September 9, 2011 1. Diamond Lattice (20 points) (a) The lattice constant of Ge at room temperature is a = 5.65 Å. Determine the number of Ge atoms per cm 3 . (b) Calculate the density of crystalline silicon at room temperature using the lattice constant a = 5.43Å, the atomic weight m = 28.09 g/mol, and the Avogadro’s number 6.023·10 23 mol -1 . 2. Cubic Crystal Structures (20 points) In terms of the lattice constant a , what is the distance between nearest neighbor atoms in
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Unformatted text preview: (a) a bcc lattice? (b) an fcc lattice? 3. Pierret, Problem 1.5, parts (a)–(d) (20 points) 4. Pierret, Problem 1.7, parts (a), (d), (f), and (g) (20 points) 5. Fermi Function (20 Points) a. Under equilibrium conditions and T > 0 K, what is the probability of an electron state being occupied if it is located at the Fermi level? b. If E F is positioned at E C , determine the probability of finding electrons in states at E C + kT. c. The probability of a state is filled at E C + kT is equal to the probability a state is empty at E C + kT. Where is the Fermi level located? d. What is the probability of a state being “occupied” by a hole at an energy E = E F – kT?...
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## This note was uploaded on 10/12/2011 for the course ECE 3040 taught by Professor Hamblen during the Fall '07 term at Georgia Institute of Technology.

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