From Semi-Classical to Quantum Transport Modeling: What is Computational Electronics?
10 Aug 2009 | Contributor(s): Dragica Vasileska
This set of powerpoint slides series provides insight on what are the tools available for modeling devices that behave either classically or quantum-mechanically. An in-depth description is provided to the approaches with emphasis on the advantages and disadvantages of each approach. Conclusions...
1D Drift Diffusion Model for Crystalline Solar Cells
Tools | 16 Apr 2011 | Contributor(s): Dragica Vasileska, Xufeng Wang, Shankar Ramakrishnan
Simulate a 1D solar cell of crystalline material with drift diffusion equations
Nanoelectronics and Modeling at the Nanoscale
Series | 30 Jun 2011 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
Nanoelectronics refers to the use of nanotechnology on electronic components, especially transistors. Although the term nanotechnology is generally defined as utilizing technology less than 100 nm in size, nanoelectronics sometimes refers to transistor devices that are so small that inter-atomic...
AQME - Advancing Quantum Mechanics for Engineers
Tools | 12 Aug 2008 | Contributor(s): Gerhard Klimeck, Xufeng Wang, Dragica Vasileska
One-stop-shop for teaching quantum mechanics for engineers
Bound States and Open Systems
Teaching Materials | 30 May 2010 | Contributor(s): Dragica Vasileska
bound states, open systems, transfer matrix approach, gate leakage calculation in Schottky gates
Reading Material: Tunneling
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Teaching Materials | 08 Jul 2008 | Contributor(s): Dragica Vasileska
www.eas.asu.edu/~vasileskNSF
Quantum Mechanics: Tunneling
Series | 08 Jul 2008 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
In quantum mechanics, quantum tunnelling is a micro nanoscopic phenomenon in which a particle violates the principles of classical mechanics by penetrating a potential barrier or impedance higher than the kinetic energy of the particle. A barrier, in terms of quantum tunnelling, may be a form of...
Nanoelectronic Modeling Lecture 11: Open 1D Systems - The Transfer Matrix Method
Online Presentations | 30 Dec 2009 | Contributor(s): Gerhard Klimeck, Dragica Vasileska, Samarth Agarwal, Parijat Sengupta
The transfer matrix approach is analytically exact, and “arbitrary” heterostructures can apparently be handled through the discretization of potential changes. The approach appears to be quite appealing. However, the approach is inherently unstable for realistically extended devices which exhibit...
Statistical Mechanics
Teaching Materials | 20 Jul 2010 | Contributor(s): Dragica Vasileska, David K. Ferry
This set of slides describes the derivation of Fermi-Dirac, Maxwell-Boltzmann and Bose-Einstein statistics.
Low-dimensional structures
Teaching Materials | 17 Jun 2011 | Contributor(s): Dragica Vasileska
This set of slides describes some general properties of low-dimensional systems and their applications in nanoelectronics.
From Semi-Classical to Quantum Transport Modeling: Quantum Transport - Usuki Method and Theoretical Description of Green's Functions
Teaching Materials | 09 Aug 2009 | Contributor(s): Dragica Vasileska
Schottky diode - Theoretical exercises
Teaching Materials | 02 Aug 2008 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
MOSFET Exercise
Teaching Materials | 07 Jul 2008 | 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
PCPBT Manual
Teaching Materials | 01 Jun 2010 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
This is a manual for the Piece-Wise Constant Potential Barrier Tool.
Rode's Method: Theory and Implementation
Teaching Materials | 01 Jul 2010 | Contributor(s): Dragica Vasileska
This set of teaching materials provides theoretical description of the Rode's method for the low field mobility calculation that is accompanied with a MATLAB code for the low field mobility calculation for GaAs material at different temperatures and different doping concentrations. Note that the...
Crystal Structures - Packing Efficiency Exercise
Teaching Materials | 14 Jun 2010 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
Consider the most efficient way of packing together equal-sized spheres and stacking close-packed 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...
MESFET Lab
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Tools | 26 Jul 2008 | Contributor(s): Dragica Vasileska, Gerhard Klimeck, Saumitra Raj Mehrotra
This tool gives insight into the basic operation of MESFET devices
Nanoelectronic Modeling Lecture 02: (NEMO) Motivation and Background
Online Presentations | 30 Dec 2009 | Contributor(s): Gerhard Klimeck, Dragica Vasileska
Fundamental device modeling on the nanometer scale must include effect of open systems, high bias, and an atomistic basis. The non-equilibrium Green Function Formalism (NEGF) can include all these components in a fundamentally sound approach and has been the basis for a few novel device...
Boltzmann Transport Equation and Scattering Theory
Teaching Materials | 29 Jan 2011 | Contributor(s): Dragica Vasileska
In this presentation we give simple derivation of the Boltzmann transport equation, describe the derivation of Fermi's Golden Rule, and present the derivation of most common scattering mechanisms in semiconductors.
Worked Examples for a PN Diode
Teaching Materials | 28 May 2010 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
several worked examples are presented that illustrate the operation of a PN diode.
Quantum Mechanics: The story of the electron spin
Teaching Materials | 09 Jul 2008 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
One of the most remarkable discoveries associated with quantum physics is the fact that elementary particles can possess non-zero spin. Elementary particles are particles that cannot be divided into any smaller units, such as the photon, the electron, and the various quarks. Theoretical and...
General Concepts of Modeling Semiconductor Devices
Teaching Materials | 27 Jun 2011 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
This presentation is part of a series: Nanoelectronics and Modeling at the Nanoscale. It elucidates on the various methodologies needed for modeling semiconductor devices.
Nanoelectronic Modeling Lecture 09: Open 1D Systems - Reflection at and Transmission over 1 Step
Online Presentations | 30 Dec 2009 | Contributor(s): Gerhard Klimeck, Dragica Vasileska, Samarth Agarwal
One of the most elemental quantum mechanical transport problems is the solution of the time independent Schrödinger equation in a one-dimensional system where one of the two half spaces has a higher potential energy than the other. The analytical solution is readily obtained using a scattering...
Chapter 1: A Primer on the MOSFet Simulator on nanoHUB.org
Papers | 19 Mar 2020 | Contributor(s): Abdussamad Ahmed Muntahi, Dragica Vasileska, Shaikh S. Ahmed
The MOSFet simulator on nanoHUB.org (http://nanohub.org/resources/mosfet) simulates the equilibrium electrostatics and non-equilibrium current-voltage (I-V) characteristics of i) bulk, ii) dual-gate, and iii) SOI based field effect transistors. In this chapter, we will describe: i) the structure...
Exercise: CV curves for MOS capacitors
Teaching Materials | 02 Jul 2008 | Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise demonstrates to the students how the low-frequency CV curves in MOS capacitors change with changing the gate workfunction, the oxide thickness and the dielectric constant. It also demonstrates the doping variation of the high-frequency CV curves.NSFNSF