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Quantum Workshop III: LED Circuit and Device Physics
07 Feb 2015 | Contributor(s):: Stella Quinones
A hands-on learning exercise used to illustrate the device physics of a light emitting diode (LED) in a simple resistor circuit. Students explore the photon energy of four LEDs, compare the voltage drop (or forward bias) across the LED, and explain the behavior of the LED under...
Real space first-principles semiempirical pseudopotentials for Fe/MgO/Fe
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03 Dec 2008 | | Contributor(s):: Kirk Bevan
A set of semiempirical pseudopotentials for the atomistic modeling of Fe/MgO/Fe tunnel junctions. See the attached document for a full description of their derivation and the modeling approach.Document Abstract:We present a real space density functional theory (DFT) localized basis set...
Semiconductor Device Theory Exercises
30 Jul 2008 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck, Mark Lundstrom
This collection of problems should help the students to better understand Semiconductor Device Physics on a fundamental and more complex level. Crystal lattices and Miller indiciesFrom 1 well to 2 wells to 5 wells to periodic potentialsPeriodic potentials and bandstructureBandstructure...
Shiv Gopal Yadav
Simulation of laser devices with ActiveMedia nanophotonics tool (ACME NPDS)
This tutorial is intended to demonstrate how to build a device and analyze its optical properties and lasing behavior.
Solar Cell Fundamentals
19 Aug 2011 | | Contributor(s):: Mark Lundstrom, J. L. Gray, Muhammad A. Alam
The modern solar cell was invented at Bell Labs in 1954 and is currently receiving renewed attention as a potential contribution to addressing the world's energy challenge. This set of five tutorials is an introduction to solar cell technology fundamentals. It begins with a broad overview of...
Solar Cells Lecture 4: What is Different about Thin-Film Solar Cells?
29 Aug 2011 | | Contributor(s):: Muhammad A. Alam
Thin film solar cells promise acceptable efficiency at low cost. This tutorial examines the device physics of thin-film solar cells, which generally require a different type of analysis than crystalline solar cells.
Solar Cells Lecture 5: Organic Photovoltaics
Organic solar cells make use of low-cost organic polymers forphotovoltaics. Although these solar cells may appear to be quitedifferent from solar cells made with conventional, inorganicsemiconductors (e.g. they make use of exciton generation rather than electron-hole generation) this...
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
Two-Dimensional Scattering Matrix Simulations of Si MOSFET'S
27 Jun 2013 | | Contributor(s):: Carl R. Huster
For many years now, solid state device simulators have been based on the drift-diffusion equations. As transistor sizes have been reduced, there has been considerable concern about the predictive capability of these simulators. This concern has lead to the development of a number of simulation...