Homework2

# Homework2 - ECE 3040 Homework 2 1 Purpose Understanding what the fermi-distribution function is telling us The fermi-distribution function depicted

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ECE 3040 Homework 2 1) Purpose: Understanding what the fermi-distribution function is telling us. The fermi-distribution function depicted in Figure 2.15 describes the probability that a state is occupied at a given energy. Plot the probability that a state is empty. 2) Purpose: Understanding what the electron distribution is within each band - Problem Pierret 2.7 3) Purpose: Understanding special cases of doping - Problem Pierret 2.16 4) Purpose: Understanding the relationships between various energies - Problem Pierret 2.22 5) Purpose: Understanding of simple electron-hole concentration relationships. Find the electron and hole concentrations as well as the fermi level and intrinsic energy positions for a silicon sample with the following conditions: (You may need data from tables 2.1 and 2.3 and assume Total ionization and a 27 C temperature) a) 10 16 cm -3 Al b) 9x10 17 cm -3 As and 8.95x10 17 cm -3 Al c) What is the majority carrier concentration for parts a, and b? d) What is the minority carrier concentration for parts a, and b?
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## This note was uploaded on 08/23/2011 for the course ECE 3040 taught by Professor Doolittle during the Spring '11 term at University of Florida.

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