EECS 320
Semiconductor Devices
Adapted from Prof. J. Phillips EECS 320 slides
Linear Circuits
In EECS 215 you had learned of linear circuits
R1
iL
vin(t)
iC
L
+
+ vL 2iL
R2
C
vC

In EECS 320, you will learn of important nonlinear devices:
Diodes and tran
EECS 320
Semiconductor Devices
Adapted from Prof. J. Phillips EECS 320 slides
Linear Circuits
In EECS 215 you had learned of linear circuits
R1
iL
vin(t)
iC
L
+
+ vL 2iL
R2
C
vC

In EECS 320, you will learn of important nonlinear devices:
Diodes and tran
Crystal Structure &
Semiconductor Models
Why semiconductors need to have high purity?
Why materials for IC devices need to be in
crystalline form?
What is the crystal structure of Si and GaAs?
How energy bands are formed?
Where do electrons and hole
Energy bands, effective mass,
doping, density of states
What are intrinsic and doped semiconductors?
What type of impurities can be dopants for Si?
What are the energy levels of the dopant atoms?
What is n the number of electrons (or p, number
of hole
Density of states, FermiDirac
Distribution, Fermi energy
What is the number of electrons and holes that can
contribute to current flow?
What is the number of available electron (hole) states
in a semiconductor?
How are charge carriers distributed in e
Carrier Density Calculation
How to determine carrier density and the
associated Fermi energy level?
What are the necessary conditions to
determine the carrier densities?
What are intrinsic and extrinsic
semiconductors?
How can semiconductors be compen
Carrier Drift and Mobility
What are the primary types of carrier action
in a semiconductor?
Drift, diffusion, recombinationgeneration
How do carrier velocity depend on Efield?
What is carrier mobility? What are the key
parameters that determine the
Band Bending, Diffusion, Einstein Relationship
How to represent Kinetic and Potential
energy of electrons and holes
How to represent Efield in band diagram?
What is diffusion current? (no Efield needed)
Einstein relationship
QuasiFermi level and n
Recombination and Generation
What are the roles of recombination and
generation processes in semiconductors?
What are the mechanisms of RG?
What is the significance of direct and indirect
bandgap in RG processes?
How to quantify the thermal RG ?
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