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ABACUS - Assembly of Basic Applications for Coordinated Understanding of Semiconductors
16 Jul 2008 | | Contributor(s):: Xufeng Wang, Dragica Vasileska, Gerhard Klimeck
One-stop-shop for teaching semiconductor device education
ANGEL - A Nonequilibrium Green's Function Solver for LEDs
06 Feb 2010 | | Contributor(s):: sebastian steiger
Introducing ANGEL, a Nonequilibrium Green’s Function code aimed at describing LEDs.ANGEL uses a description close to the classic NEMO-1D paper (Lake et al., JAP 81, 7845 (1997)) to model quantum transport in a light-emitting diode (LED).ANGEL is the first 1D-heterostructure NEGF to include the...
Atomistic Modeling and Simulation Tools for Nanoelectronics and their Deployment on nanoHUB.org
16 Dec 2010 | | Contributor(s):: Gerhard Klimeck
At the nanometer scale the concepts of device and material meet and a new device is a new material and vice versa. While atomistic device representations are novel to device physicists, the semiconductor materials modeling community usually treats infinitely periodic structures. Two electronic...
Band Structure Lab Demonstration: Bulk Strain
03 Jun 2009 | | Contributor(s):: Gerhard Klimeck
This video shows an electronic structure calculation of bulk Si using Band Structure Lab. Several powerful features of this tool are demonstrated.
Bound States Calculation Description
out of 5 stars
05 Jul 2008 | | Contributor(s):: Dragica Vasileska
These lectures describe the calculation of the bound states in an infinite potential well, finite potential well and triangular well approximation. At the end, shooting method, that is used to numerically solve the 1D Schrodinger equation, is briefly described.visit www.eas.asu.edu/~vasileskNSF
Comparison of PCPBT Lab and Periodic Potential Lab
04 Aug 2009 | | Contributor(s):: Abhijeet Paul, Samarth Agarwal, Gerhard Klimeck, Junzhe Geng
This small presentation provides information about the comparison performed for quantum wells made of GaAs and InAs in two different tools. This has been done to benchmark the results from completely two different sets of tools and validate the obtained results. In this presentation we provide...
ECE 595E Lecture 10: Solving Quantum Wavefunctions
31 Jan 2013 | | Contributor(s):: Peter Bermel
Outline:Recap from MondaySchrodinger’s equationInfinite & Finite Quantum WellsKronig-Penney modelNumerical solutions:Real spaceFourier space
Energy Bands as a Function of the Geometry of the n-Well Potential: an Exercise
05 Jul 2008 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
Explores the position and the width of the bands as a function of the 10-barrier potential parameters.NSF
From 1 well to 2 wells to 5 wells to periodic potentials: an Exercise
02 Jul 2008 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This exercise demonstrates that the interaction between the wells lifts the degeneracy of the quasi-bound states and if in the limit we have infinite periodic potential it leads to formation of energy bands. Notice that when the interaction is less strong the energy levels are more sharp and the...
Nanoelectronic Modeling Lecture 25b: NEMO1D - Hole Bandstructure in Quantum Wells and Hole Transport in RTDs
02 Mar 2010 | | Contributor(s):: Gerhard Klimeck
Heterostructures such as resonant tunneling diodes, quantum well photodetectors and lasers, and cascade lasers break the symmetry of the crystalline lattice. Such break in lattice symmetry causes a strong interaction of heavy-, light- and split-off hole bands. The bandstructure of holes and the...
NEGF theory of quantum photovoltaic devices
21 Sep 2011 | | Contributor(s):: Urs Aeberhard
Many high-efficiency photovoltaics concepts require an advanced control and manipulation of the optoelectronic properties of the active device structure, leading to a prominent role of low dimensional absorbers such as quantum wells, wires and dots in the implementation of these concepts....
Notes on Scattering and Mobility in 1D, 2D, and 3D
03 Nov 2009 | | Contributor(s):: Dmitri Nikonov, Md. Sayed Hasan, George Bourianoff
Derivation of the phonon-limited mobility is reviewed for electrons in bulk (3D) orquantum confined (2D and 1D) semiconductor structures. Analytical estimates are madethat show the mobility in quantum confined structures is, in general, lower or no higherthan in non-confined ones.
Quantum Wells, Heterostructures and Superlattices
22 Jul 2010 | | Contributor(s):: Stephen M. Goodnick, Dragica Vasileska
this is an overview of the analysis and the application of quantum wells, heterostructures and superlattices.
Thermoelectric Power Factor Calculator for Nanocrystalline Composites
18 Oct 2008 | | Contributor(s):: Terence Musho, Greg Walker
Quantum Simulation of the Seebeck Coefficient and Electrical Conductivity in a 2D Nanocrystalline Composite Structure using Non-Equilibrium Green's Functions
Thermoelectric Power Factor Calculator for Superlattices
Quantum Simulation of the Seebeck Coefficient and Electrical Conductivity in 1D Superlattice Structures using Non-Equilibrium Green's Functions
Tutorial 4b: Introduction to the NEMO3D Tool - Electronic Structure and Transport in 3D
23 Mar 2011 | | Contributor(s):: Gerhard Klimeck
Electronic Structure and Transport in 3D - Quantum Dots, Nanowires and Ultra-Thin Body Transistors
[Illinois] ECE 398 Lecture 6: Heterostructure Energy Bands & Quantum Wells
08 Nov 2010 | | Contributor(s):: Kent D Choquette