1.9 Kinetic Molecular Theory Calculate the effective (rms) speeds of the He and
Ne atoms in the He-Ne gas laser tube at room temperature (300 K).
Solution
To find the root mean square velocity (vrms)
ECE 3200
Homework #6 (Due at 9:10 am on Thursday; March 3, 2016)
Textbook Example (5 points each):
[1] Repeat Example 3.8 when the semiconductor doping level is ND = 5 1016 cm-3.
[2] Repeat Example 3.
ECE 3200
Homework #3 (Due: Beginning of the class on Thursday, February 2, 2017)
* 10 points for each problem
Textbook Problems:
[1] 2.1
[2] 2.2
[3] Example 2.1
[4] Example 2.2
[5] Example 2.3
Extra C
ECE 3200
Homework #2 (Due: Beginning of the class on Thursday, January 26, 2017)
* 10 points for each problem
Review problem in text:
[1] Example 1.7 (a), (b) this example solves a case where the ther
ECE 3200
Homework #1 (Due: Beginning of the class on Tuesday, January 17, 2017)
* 10 points for each problem
Textbook Problems:
[1] Example 1.3
[2] Problems 1.1 (b), (c)
ANSWER 1.1 (c): 0.340
[3] Prob
ECE 3200
Homework #5 (Due at 9:10 am on Thursday, March 2, 2017)
Textbook Example:
[1] Example 3.2 (c), (d).
[2] Repeat Example 3.6 when P-type silicon has a resistivity of 0.4 cm.
[3] Repeat Example
ECE 3200
Homework #4 (Due at 9:10 am on Tuesday; Feb. 21, 2017)
Textbook Problems:
[1] Repeat Example 2.7 (a) for intrinsic GaAs and for intrinsic Ge (reference: Table 2.1)
[2] Repeat Example 2.12 for
ECE 3200
Homework #10 (Due at 9:10 am on Tuesday, April 25, 2017)
Practice Problems (10 points each):
[1] Problem 6.2
[2] Problem 6.10 (b)
[3] Problem 6.15
[4-6] Old Exam Problems
[7] (Optional; 40 pt
ECE 3200
Homework #10 (Due at 9:10 am on Thursday, April 13, 2017)
Practice Problems (10 points each):
[1] Problem 6.1
[2] Problem 6.4 (a), (b)
[3] Problem 6.5
[4] Previous Exam Problem (20 points)
[5
ECE 3200
Homework #7 (Due at 9:10 am on Thursday, March 23, 2017)
Textbook Problems (10 points each):
[1] Problem 3.15
[2] Problem 3.18
[3] Problem 3.28
[4] Problem 4.2
[5] Problem 4.4
(continue)
Old
ECE 3200
Homework #8 (Due at 9:10 am on Thursday, March 30, 2017)
Practice Problems (10 points each):
[1] Problem 5.2
[2] Problem 5.5 (case 1 only; Gext = 1012 cm-3s-1)
[3] Problem 5.7
[4] Problem 5.1
Homework Set #1:
1. If for silicon at 27C the effective densities of states at the conduction and valence
band edges are NC 3.28(1019) cm3 and NV 1.47(1019) cm3, respectively, and if at any
temperatur
1.1.1 Drift and Diffusion Currents
Weve described the creation of negatively charged electrons and
positively charged holes in the semiconductor. If these charged particles move,
a current is generate
ECE 3200
Homework #4 (Due at 9:10 am on Thursday; Feb. 11, 2016)
Textbook Problems:
[1] Repeat Example 2.7 (a) for intrinsic GaAs and for intrinsic Ge (reference: Table 2.1)
[2] Repeat Example 2.12 fo
Homework7,DueThursMarch10inClass
ECE3200:IntroductiontoSemiconductorDevicePhysics
Prof.Scarpulla,Spring2011
Problems:
0) Were going to try a new pedagogical idea here. For problem 0 of this assignment
Homework8,DueThursApril7,InClass
ECE3200:IntroductiontoSemiconductorDevicePhysics
Prof.Scarpulla,Spring2010
*
Note: I pushed the Chapter 4 exam date back to Thurs April 7th to allow us to reasonably
s
Homework 7
Part a
Part b
Part c
3.15 Tunneling
a. Consider the phenomenon of tunneling through a potential energy barrier of height Vo
and width a, as shown in Figure 3.16. What is the probability tha
4.4 Compound III-V semiconductors Indium as an element is a metal. It has a valency of III. Sb as an
element is a metal and has a valency of V. InSb is a semiconductor, with each atom bonding to four
Problem 3 - Types of Materials | {32 pts]
For parts a-d, imagine that you work for a company and need to identify' some unmarked samples of
unknown materials found in a warehouse
Material #1
The condu
[-'18 pts]
Problem 1 - Atoms
a)
[3 pts] What is an atom? (20 words max)
A,
tJvr(jvf1~
b)
Jo/lf l~ ()./')dvt-ojtdrc.J~
~
nocleus, wJ,~CA
COl1.J.r:tihS
ftlJft;hJ
tI'
5 'j!?.nwr
kuYl~
der-/.rt) n 5
r: JI
ECE 3200
Homework #3 (Due at 9:10 am on Thursday; Feb. 4th, 2016)
Please note that the HW submitted after the class wont be accepted (to be fair to other students).
Textbook Problems:
[1] 2.1
[2] 2.5
ECE 3200
Homework #5 (Due at 9:10 am on Thursday; Feb. 18, 2016)
Textbook Problems:
[1] Repeat Example 2.17 for P-type silicon (NA = 1016 cm-3). The steady-state concentration of the
additional electr