
MOSCAP  Theoretical Exercises 1
02 Aug 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck

MOSCAP  Theoretical Exercises 2
02 Aug 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck

MOSCAP  Theoretical Exercises 3
02 Aug 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck

MOSCAP Worked out problems (Basic)
19 Aug 2010  Teaching Materials  Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck
A simple MOSCAP is analyzed under different operation modes namely: Accumulation, near threshold and Inversion.

MOSCAP: Theoretical Exercise  High Frequency CV Curves
07 Jul 2009  Teaching Materials  Contributor(s): Dragica Vasileska
One is required to sketch the high frequency CV curves for different MOS Capacitors configurations.

MOSFET  Theoretical Exercises
03 Aug 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
www.eas.asu.edu/~vasileskNSF

MOSFET Exercise
07 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
With this exercise students are familiarized with the punchthrough effect, the series resistance at the source and drain region and the importance of impact ionization at high gate and drain bias conditions.www.eas.asu.edu/~vasileskNSF

MOSFET Lab  Scaling
03 Jan 2011  Teaching Materials  Contributor(s): Saumitra Raj Mehrotra, Gerhard Klimeck, Dragica Vasileska
The concept of device scaling and the need to control short channel effects is used in this real life problem

MOSFET Lab Exercise: Series Resistance and Transistor Breakdown
13 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise is supposed to teach the students the role of the source and drain resistance on device output characteristics. The second portion of the assignment is supposed to train students how to simulate MOSFET operation near transistor breakdown.

Multigrid Tutorial
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This set of slides describe the idea behind the multigrid method and its implementation.

Negative Differential Resistivity Exercise
28 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
In certain semiconductors such as GaAs and InP the average velocity as a function of field strength displays a maximum followed by a regime of decreasing velocity. Hilsum, Ridley, and Watkins postulated that peculiarities in the band structure of semiconductors would lead to the above phenomenon. The conduction band in compound semiconductors such as GaAs has away from the Г point (centre of Brillouin zone) local minima at the X and L valleys (satellite valleys). These valleys are a few …

Nonpolar optical phonon scattering
30 Jun 2011  Teaching Materials  Contributor(s): Dragica Vasileska
These handwritten notes are part of the Semiconductor Transport class and describe nonpolar optical phonon scattering.

Numerical solution of the DriftDiffusion Equations for a diode
01 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This material describes the implementation and also gives the source code for the numerical solution of the DriftDiffusion equations for a PN Diode. The code can be easily generalized for any 2D or 3D device.

Open Systems
30 Jun 2008  Teaching Materials  Contributor(s): Dragica Vasileska
This tutorial contains introductory material for Quantum Mechanics for Engineers with emphasis on tunneling, open systems and the definitions of transmission and reflection coefficients and their calculation in the case of piecewise constant potential energy profiles.NSF

Optimize Solar Cells
10 Feb 2011  Teaching Materials  Contributor(s): Dragica Vasileska
In this presentation different avenues used to enhance the performance of solar cells are explained.

Orthogonal Polynomials and Conductivity
30 Jun 2011  Teaching Materials  Contributor(s): Dragica Vasileska
This set of handwritten notes is part of the Semiconductor Transport class.

Parallel Conduction Channel: an Exercise for 1D Heterostructure Lab
15 Aug 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise uses the 1D Heterostructure Lab, which demonstrates that adding more dopants in the buffer layer becomes ineffective after certain critical doping density. Beyond this critical doping density, additional dopants practically fill in the parallel conduction channel that sits in the AlGaAs layer in which carriers have significantly lower mobility due to alloy scattering.

PCPBT Exercise  Symmetric Barriers
23 Jun 2009  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise explores the nature of the quasibound states in a symmetric double barrier structure and how the broadening and the position of the quasibound states varies with the hidth and the height of the barriers.

PCPBT Manual
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This is a manual for the PieceWise Constant Potential Barrier Tool.

PCPBT: Problem Assignment for Asymmetric Barriers
24 Jun 2009  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This example demonstrates to the students that for nonsymmetric barriers which arise due to the imperfection of the molecular beam epitaxy process there is a reduction in the transmission coefficient and therefore current.

Periodic Potentials and Bandstructure: an Exercise
02 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise teaches the students that in the case of strong coupling between the neighboring wells in square and Coulomb periodic potential wells electrons start to behave as free electrons and the gaps that open at the Brillouin zone boundaries become smaller and smaller (thus recovering the free particles dispersion relation).
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Periodic Potentials and the KronigPenney Model
01 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska
This material describes the derivation of the KronigPenney model for deltafunction periodic potentials.

Periodic Potentials Exercise
16 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
In this exercise, various calculations of the electronic band structure of a onedimensional crystal are performed with the KronigPenney (KP) model. This model has an analytical solution and therefore allows for simple calculations. More realistic models always require extensive numeric calculations, often on the fastest computers available. The electronic band structure is directly related to many macroscopic properties of the material and therefore of large interest. Nowadays, hypothetical …

Phonon Thermal Properties
11 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
Phonon Thermal Properties are discussed in this set of slides.

Phonon Vibrations
11 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
Vibrations of the crystalline lattice are explained on the examples of monoatomic and diatomic lattice.