Nanoelectronic Modeling Lecture 10: Open 1D Systems - Transmission through & over 1 Barrier

31 Dec 2009 | Online Presentations | Contributor(s): Gerhard Klimeck, Dragica Vasileska, Samarth Agarwal

Tunneling and interference are critical in the understanding of quantum mechanical systems. The 1D time independent Schrödinger equation can be easily solved analytically in a scattering matrix approach for a system of a single potential barrier. The solution is obtained by matching wavefunction …

Your Career Choices after Graduate School and The Most-Neglected Item in your Career Development

23 Oct 2009 | Online Presentations | Contributor(s): Gerhard Klimeck

What are your career choices after graduate school? Will you develop technology yourself? Will you work in a team? Will you guide people? Where will you work: in industry, research lab, or academia? Regardless where you work, there is generally one item that you are not being taught in graduate …

Basic Portable Batch System (PBS)

02 Oct 2009 | Notes | Contributor(s): Xufeng Wang, Kaspar Haume, Gerhard Klimeck

This presentation discusses the basics of Portable Batch System (PBS) and how to use it on Purdue's NCN system.

Advanced Portable Batch System (PBS)

02 Oct 2009 | Notes | Contributor(s): Xufeng Wang, Kaspar Haume, Gerhard Klimeck

This presentation is a following installment of "Basic Portable Batch System (PBS)" on nanohub.org. Here we discuss some advanced features of PBS and how to adapt them on Purdue's NCN owned clusters.

OMEN_FET

09 Apr 2009 | Tools | Contributor(s): Neerav Kharche, Mathieu Luisier, George A. Howlett, Gerhard Klimeck, Mehdi Salmani Jelodar

Simulates High Electron Mobility Transistor (HEMT), single-gate MOSFET, and double-gate MOSFET in effective mass approximation

Comparison of PCPBT Lab and Periodic Potential Lab

04 Aug 2009 | Online Presentations | 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 the …

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 PADRE-based simulation modules installed on the nanohub. It gives clear overview on the capabilities of each tool with emphasis to most important effects occuring in nano-scale devices.

Exercise for MOS Capacitors: CV curves and interface and Oxide Charges

30 Jul 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: DIBL Effect

30 Jul 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 MESFET: Theoretical Exercises

30 Jul 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 MESFET: Simulation Exercise

30 Jul 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.

BJT Lab: h-Parameters Calculation Exercise

30 Jun 2009 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

In this exercise students are required to obtain the appropriate input and output parameters to extract the small signal h-parameters in common-base configuration. Afterwards they need to derive the h-parameters in common-emitter configuration in terms of the h-parameters in the common base …

PCPBT: Problem Assignment for Asymmetric Barriers

24 Jun 2009 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This example demonstrates to the students that for non-symmetric barriers which arise due to the imperfection of the molecular beam epitaxy process there is a reduction in the transmission coefficient and therefore current.

PN Junction Lab Exercise: Non-Idealities in a PN Diode

23 Jun 2009 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This exercise explores the behavior of a non-ideal diode in which the generation-recombination mechanisms in the depletion region, high levels of injection, and series resistance effects can significantly affect the diode behavior.

PN Junction Lab Exercise: Short vs. Long Diode

23 Jun 2009 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This exercise examines the behavior of short vs. long diodes.

BJT Lab: Theoretical Exercises

23 Jun 2009 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

These two theoretical exercises are designed for the purpose of teaching the students the contribution of different current components for various modes of BJT transistor operation and also to understand how to examine and extract important BJT parameters from the device output characteristics.

PCPBT Exercise - Symmetric Barriers

23 Jun 2009 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This exercise explores the nature of the quasi-bound states in a symmetric double barrier structure and how the broadening and the position of the quasi-bound states varies with the hidth and the height of the barriers.

Band Structure Lab: First-Time 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. First-time 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 …

RTD with NEGF Demonstration: Basic RTD Asymmetric

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck

This video shows the analysis of a 2 barrier Resonant Tunneling Diode (RTD) over 21 bias points using RTDLab. Several powerful features of this tool are demonstrated.

Band Structure Lab Demonstration: Bulk Strain

03 Jun 2009 | Animations | 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.

Crystal Viewer Demonstration: Bravais Lattices

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley

This video shows the exploration of several crystal structures using the Crystal Viewer tool. Several powerful features of this tool are demonstrated.

Crystal Viewer Demonstration: Bravais Lattices 2

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley

This video shows the exploration of several crystal structures using the Crystal Viewer tool. Several powerful features of this tool are demonstrated

Crystal Viewer Demonstration: Various Crystal Systems

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley

This video shows the use of the Crystal Viewer Tool to visualize several crystal systems, including Si, GaAs, C60 Buckyball, and a carbon nanotube. Crystal systems are rotated in 3D, zoomed in and out, and the lattice style changes from sticks and balls to lines to spheres.

MOSFet Demonstration: MOSFET Device Simulation and Analysis

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley

This video shows the simulation and analysis of a MOSFET device using the MOSFet tool. Several powerful analytic features of this tool are demonstrated.

MOSCap Demonstration: MOS Capacitor Simulation

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley

This video shows the simulation of a MOS capacitor using the MOSCAP tool. Several powerful analytic features of this tool are demonstrated.