
Crystal Structure
11 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of lecture notes describe crystalline structure and different types of crystal lattices.

Crystal Structures
08 Jun 2010  Teaching Materials  Contributor(s): David K. Ferry, Dragica Vasileska, Gerhard Klimeck
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a basis, a set of atoms arranged in a particular way, and a lattice. The basis is located upon the points of a lattice spanned by lattice vectors, which is an array of points repeated periodically in three dimensions. The set of points forming a volume that can completely fill the space of the lattice when translated by integral multiples of the lattice …

Crystal Structures  Packing Efficiency Exercise
15 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
Consider the most efficient way of packing together equalsized spheres and stacking closepacked atomic planes in three dimensions. For example, if plane A lies beneath plane B, there are two possible ways of placing an additional atom on top of layer B. If an additional layer was placed directly over plane A, this would give rise to the following series :
...ABABABAB....
This type of crystal structure is known as hexagonal close packing (hcp).
If however, all three planes are staggered …

Crystal Viewer Lab Exercise
28 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
A central problem in the investigation of material properties involves the examination of the underlying blocks that aggregate to form macroscopic bodies. These underlying blocs own a definite arrangement that is repeated in three dimensions to give the crystal structure. We will try to explore the geometry of some well known class of materials (e.g., diamond, zincblende, wurtzite etc,) and learn techniques of identifying planes (Miller indices) and directions in these crystal structures. …

Crystal Viewer Tool Verification (V 2.3.4)
15 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This text verifies the Crystal Viewer Tool by comparing the amount of dangling bonds at the silicon surface for [100], [110] and [111] crystal orientation. The crystal viewer results are in agreement with experimental findings.

Deformation Potential Scattering
30 Jun 2011  Teaching Materials  Contributor(s): Dragica Vasileska
This set of lecture notes is part of the semiconductor transport class. This particular lecture gives the scattering rates for deformation potential scattering.

Description of the K.P Method for Band Structure Calculation
05 Aug 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This set of slides describes the k.p mehod for band structure calculation.

Device Parameters Extraction Within Silvaco Simulation Software
30 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska
This set of slides explains the extract statements within SILVACO simulation software.

Double Barrier Case
30 Jun 2008  Teaching Materials  Contributor(s): Dragica Vasileska
This material contains derivation for the transmission coefficient and current calculation in doublebarrier structures that are also known as resonant tunneling diodes.

DoubleBarrier Case: An Exercise
30 Jun 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck

Drift Diffusion  Temperature Sensor
16 Aug 2010  Teaching Materials  Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck
The fact that mobility of a semiconductor varies with temperature is used to design a temperature sensor in this test.

Drift Diffusion Lab Worked out problems (Diffusion)
16 Aug 2010  Teaching Materials  Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck
A sample problem is worked out using DriftDiffusion lab. The problem statement deals with the concept of diffusion in semiconductors.

Drift Diffusion Lab Worked out problems (Drift)
18 Aug 2010  Teaching Materials  Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck
This sample worked out problem illustrated the concept of mobility. Mobility values are computed for different material and doping levels.

DriftDiffusion Modeling and Numerical Implementation Details
01 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This tutorial describes the constitutive equations for the driftdiffusion model and implementation details such as discretization and numerical solution of the algebraic equations that result from the finite difference discretization of the Poisson and the continuity equations.
vasileska.faculty.asu.edu
NSF

ElectronElectron Interactions
20 Jun 2011  Teaching Materials  Contributor(s): Dragica Vasileska
This set of slides describes the electronelectron interactions scattering rates calculations as it occurs in bulk materials, lowdimensional structures and semiconductor devices.

Empirical Pseudopotential Method: Theory and Implementation
17 May 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This tutorial first teaches the users the basic theory behind the Empirical Pseudopotential (EPM)Bandstructure Calculation method. Next, the implementation details of the method are described and finally a MATLAB implementation of the EPM is provided.
vasileska.faculty.asu.edu
NSF

Energy Bands as a Function of the Geometry of the nWell Potential: an Exercise
05 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
Explores the position and the width of the bands as a function of the 10barrier potential parameters.
NSF

Exercise for MESFET: Simulation Exercise
03 Aug 2009  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This simulation exercise is designed to illustrate the operation of a MESFET device for different doping of the active region.

Exercise for MESFET: Theoretical Exercises
03 Aug 2009  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
These theoretical exercises should help the student in understanding the operation of a MESFET device.

Exercise for MOS Capacitors: CV curves and interface and Oxide Charges
03 Aug 2009  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise is designed to teach the students how the CV curves of an ideal MOS Capacitor change in the presence of oxide or interface charges.

Exercise for MOSFET Lab: Device Scaling
28 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise explores device scaling and how well devices are designed.

Exercise for MOSFET Lab: DIBL Effect
03 Aug 2009  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
In this exercise students are required to examine the drain induced barrier lowering (DIBL) effect in short channel MOSFET devices.

Exercise for MOSFET Lab: Long Channel vs. Short Channel Device
03 Aug 2009  Teaching Materials  Contributor(s): Dragica Vasileska
In this exercise studentsare required to simulate long channel device for which the graduate channel approximation is valid and the short channel device for which velocity saturation effect starts to play significant role.

Exercise: Basic Operation of nChannel SOI Device
23 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise teaches the students the basic operation of nchannel SOI devices.NSF

Exercise: Bruteforce approach applied to harmonic oscillator problem and Coulomb potential in 1D
06 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
These exercises teach the students the bruteforce approach for calculating bound states in harmonic and Coulomb potential.Dragica Vasileska lecture notes on Quantum Mechanics (www.eas.asu.edu/~vasilesk)NSF