
Solar Cells Operation and Modeling
19 Jul 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of slides decribes the basic principles of operation of various generations on solar cells with emphasis to single crystalline solar cells. Next, semiconductor equations that describe the operation of a solar cell under simplified conditions is given. Finally, modeling of single junction solar cells is described. Modeling of solar cells with Silvaco simulation software is also outlined.
NSF

Crystal Directions and Miller Indices
08 Jun 2010  Teaching Materials  Contributor(s): David K. Ferry, Dragica Vasileska, Gerhard Klimeck
Miller indices are a notation system in crystallography for planes and directions in crystal lattices. In particular, a family of lattice planes is determined by three integers, l, m, and n, the Miller indices. They are written (lmn) and denote planes orthogonal to a direction (l,m,n) in the basis of the reciprocal lattice vectors.

Smith Chart Examples
04 Aug 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
Smith charts are used in RF applications to represent Sparameters and reflection coefficients of a twoport network. Examples are also given on calculation of the Sparameters for MEMT Structures using Silvaco ATLAS BLAZE module. Matching network construction is also illustrated.

Slides: Zeeman Splitting
10 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
www.eas.asu.edu/~vasileskNSF

Carrier Statistics Lab: FirstTime User Guide
09 Mar 2009  Teaching Materials  Contributor(s): Abhijeet Paul, Gerhard Klimeck, Benjamin P Haley, Saumitra Raj Mehrotra
This firsttime user guide is an introduction to the Carrier Statistics Lab . It provides basic definitions, guidance on how to run the tool, and suggested exercises to help users get accustomed to the idea of distribution functions as well as how these functions are used in determining the carrier concentration and fermilevel in some of the common semiconductors. If you have any suggestions for improvements or corrections, feel free to contact us.
NCN@Purdue

Tunneling
30 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of slides describes the quantummechanical process for tunneling and how it is accounted for in modeling semiconductor devices. We explain WKB approximation, transfer matrix approach and the TsuEsaki formula for the calculation of the current.

PN Diode Exercise: Series Resistance
06 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
An exercise in determining the series resistance in a PN diode.

TightBinding Band Structure Calculation Method
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of slides describes on simple example of a 1D lattice, the basic idea behind the TightBinding Method for band structure calculation.

Sparameters
04 Aug 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of lecture notes introduces the students to the concept of sparameters that are used for characterization of RF circuits.

Tutorial for PADRE Based Simulation Tools
10 Aug 2009  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This tutorial is intended for first time and medium level users of PADREbased simulation modules installed on the nanohub. It gives clear overview on the capabilities of each tool with emphasis to most important effects occuring in nanoscale devices.

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

Computational Electronics
07 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck, Stephen M. Goodnick
As semiconductor feature sizes shrink into the nanometer scale regime, device behavior becomes increasingly complicated as new physical phenomena at short dimensions occur, and limitations in material properties are reached. In addition to the problems related to the actual operation of ultrasmall devices, the reduced feature sizes require more complicated and timeconsuming manufacturing processes. This fact signifies that a pure trialanderror approach to device optimization will become ...

BJT Problems and PADRE Exercise
11 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of problems makes the students familiar with hparameters and they also teach them how to write the input deck for simulation of BJT device to obtain the Gummel plot, the output characteristics and to extract the hparameters. Also here, students are taught how to treat current contacts (such as the base contact in BJT).
www.eas.asu.edu/~vasileskNSF

Introduction to Coulomb Blockade Lab
31 Mar 2008  Teaching Materials  Contributor(s): Bhaskaran Muralidharan, Xufeng Wang, Gerhard Klimeck
The tutorial is based on the Coulomb Blockade Lab available online at Coulomb Blockade Lab. Students are introduced to the concepts of level broadening and charging energies in artificial atoms (single quantum dots) and molecules (coupled quantum dots).
A tutorial level introduction to the underlying theory can be found in chapters 5 and 6 of “ElectronPhonon and ElectronElectron Interactions in Quantum Transport”, Gerhard Klimeck, Ph.D. thesis, Purdue University, 1994.
NCN@Purdue[1] ...

Homework Exercise on Bipolar Junction Transistors
30 Mar 2008  Teaching Materials  Contributor(s): Saumitra Raj Mehrotra, Muhammad A. Alam, Gerhard Klimeck
The tutorial questions are based on the Bipolar Junction Transistor Lab v1.0 available online at Bipolar Junction Transistor Lab. Students are asked to find the emitter efficiency, the base transport factor, current gains, and the Early voltage. Also a qualitative discussion is requested.NCN@Purdue

Homework Exercise on Drift & Diffusion in Bulk Semiconductors
30 Mar 2008  Teaching Materials  Contributor(s): Saumitra Raj Mehrotra, Gerhard Klimeck
The tutorial questions based on Drift Diffusion Lab v1.0 available online at Drift Diffusion Lab. Students are asked to explore the concepts of Drift, Diffusion, Quasi Fermi Levels, and response to light.NCN@Purdue

Quantum Mechanics: Hydrogen Atom
09 Jul 2008  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
The solution of the Schrödinger equation (wave equations) for the hydrogen atom uses the fact that the Coulomb potential produced by the nucleus is isotropic (it is radially symmetric in space and only depends on the distance to the nucleus). Although the resulting energy eigenfunctions (the "orbitals") are not necessarily isotropic themselves, their dependence on the angular coordinates follows completely generally from this isotropy of the underlying potential: The eigenstates of the ...

Crystal Viewer Tool: FirstTime User Guide
01 Jun 2009  Teaching Materials  Contributor(s): Abhijeet Paul, Benjamin P Haley, Gerhard Klimeck
This firsttime user guide is an introduction to the Crystal Viewer Tool lab. It provides basic definitions, including a definition of crystals. Any suggestions for changes and corrections are welcomed.

Homework Exercise on FermiDirac and MaxwellBoltzmann Distributions
24 Jan 2008  Teaching Materials  Contributor(s): Abhijeet Paul, Saumitra Raj Mehrotra, Gerhard Klimeck
The tutorial questions based on Carrier Statistics Lab v1.0 available online at Carrier Statistics Lab. Students are asked to explore the differences between FermiDirac and MaxwellBoltzmann distributions, compute electron and hole concentrations, study temperature dependences, and study freezeout.NCN@Purdue

Analytical and Numerical Solution of the Double Barrier Problem
28 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
Tunneling is fully quantummechanical effect that does not have classical analog. Tunneling has revolutionized surface science by its utilization in scanning tunneling microscopes. In some device applications tunneling is required for the operation of the device (Resonant tunneling diodes, EEPROMs – floating gate memories), but in some cases it leads to unwanted power dissipation, such as gate leakage in both MOS and Schottky transistors. Resonant tunneling diodes, due to the tunneling …

Green's Functions Method Explained
10 Aug 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This is a tutorial on nonequilibrium Green's functions.

MESFET Operation Description
15 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of slides gives MESFET operation description from a physical standpoint.

Band Structure Lab: FirstTime User Guide
15 Jun 2009  Teaching Materials  Contributor(s): Abhijeet Paul, Benjamin P Haley, Gerhard Klimeck
This document provides useful information about Band Structure Lab. Firsttime users will find basic ideas about the physics behind the tool such as band formation, the Hamiltonian description, and other aspects. Additionally, we provide explanations of the input settings and the results of the simulations. Finally, this document gives users the chance to examine case studies performed using the tool. Information offered in this document encourages users to perform more simulations in order to …

ACUTE  PN Diode Modeling
08 Jul 2011  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
In this assignment, starting from an equilibrium Poisson equation solver for pndiode, students are required to develop a complete 1D driftdiffusion simulator using the lecture materials provided as part of the ACUTE toolbased curricula.

MOSCap: FirstTime User Guide
30 Mar 2009  Teaching Materials  Contributor(s): SungGeun Kim, Benjamin P Haley, Gerhard Klimeck
This firsttime user guide provides an introduction to MOSCap. The MOSCap tool simulates the onedimensional (along the growth direction) electrostatics in typical single and dualgate MetalOxideSemiconductor device structures as a function of device size, geometry, oxide charge, temperature, doping concentration and applied frequency. We also provide some basic definitions in this document.
NCN
Dragica Vasileska (2008), "MOS Capacitors Description"
Dragica Vasileska (2008), "MOSFET …