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Tags: ABACUS

Description

ABACUS is a collection of tools for the teaching fundamental concepts of semiconductor devices. These concepts typically include lattices, crystal structure, bandstructure, band models, carrier distributions, drift, diffusion, pn junctions, solar cells, light-emitting diodes (LED), bipolar junction transistors (BJT), metal-oxide semiconductor capacitors (MOScap), and multi-acronym-device field effect transistors (madFETs).

ABACUS is the key element in the Tool-Powered Curriculum on Semiconductor Device Education.

Resources (61-80 of 88)

  1. Exercise: PIN Diode

    06 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    An exercise in the operation of a PIN diode under the conditions of forward and reverse bias.

    http://nanohub.org/resources/4896

  2. PN Diode Exercise: Graded Junction

    06 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    An exercise in determining the preferred approach to solving the Poisson equation.

    http://nanohub.org/resources/4898

  3. Schred: Exercise 1

    06 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    This exercise illustrates basic SCHRED capabilities for modeling MOS capacitors and also illustrates how the bound states distribution in energy changes with doping. The average distance of the...

    http://nanohub.org/resources/4900

  4. SCHRED: Exercise 2

    06 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    In this exercise students examine the doping dependence of the threshold voltage shift in MOS capacitors due to the quantum-mechanical charge description in the channel.www.eas.asu.edu/~vasileskNSF

    http://nanohub.org/resources/4902

  5. Schred: Exercise 3

    06 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    This exercise examines the degradation of the total gate capacitance with technology generation due to Maxwell-Boltzmann instead of Fermi-Dirac statistics, quantum-mechanical charge description...

    http://nanohub.org/resources/4904

  6. MOSFET Exercise

    07 Jul 2008 | Teaching Materials | 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...

    http://nanohub.org/resources/4906

  7. Periodic Potentials and the Kronig-Penney Model

    01 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska

    This material describes the derivation of the Kronig-Penney model for delta-function periodic potentials.

    http://nanohub.org/resources/4847

  8. Quantum-Mechanical Reflections in Nanodevices: an Exercise

    02 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    This exercise points out to the fact that quantum-mechanical reflections are going to be significant in nanoscale devices and proper modeling of these device structures must take into...

    http://nanohub.org/resources/4849

  9. Periodic Potentials and Bandstructure: an Exercise

    02 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    This exercise teaches the students that in the case of strong coupling between the neighboring wells in square and Coulomb periodic potential wells electrons start to behave as free electrons and...

    http://nanohub.org/resources/4851

  10. From 1 well to 2 wells to 5 wells to periodic potentials: an Exercise

    02 Jul 2008 | Teaching Materials | 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...

    http://nanohub.org/resources/4853

  11. Exercise: CV curves for MOS capacitors

    02 Jul 2008 | Teaching Materials | 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...

    http://nanohub.org/resources/4855

  12. Quantum-Mechanical Reflections: an Exercise

    30 Jun 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    http://nanohub.org/resources/4831

  13. Schred Tutorial Version 2.1

    23 Jun 2008 | Downloads | Contributor(s): Dragica Vasileska

    This Schred tutorial [or User's Manual] is intended to help users of the Schred tool with the Rappture interface. Readers will find various examples for modeling single-gate and dual-gate...

    http://nanohub.org/resources/4796

  14. Quantum Size Effects and the Need for Schred

    23 Jun 2008 | Downloads | Contributor(s): Dragica Vasileska

    In this paper, we provide a historical overview of the observation of quantum effects in both experimental and theoretical nanoscale devices. This overview puts into perspective the need for...

    http://nanohub.org/resources/4794

  15. BJT Lab

    06 Feb 2008 | Tools | Contributor(s): Saumitra Raj Mehrotra, Abhijeet Paul, Gerhard Klimeck, Dragica Vasileska, Gloria Wahyu Budiman

    This tool simulates a Bipolar Junction Transistor (BJT) using a 2D mesh. Powered by PADRE.

    http://nanohub.org/resources/bjt

  16. Drift-Diffusion Lab

    22 Jan 2008 | Tools | Contributor(s): Saumitra Raj Mehrotra, Abhijeet Paul, Gerhard Klimeck, Gloria Wahyu Budiman

    Simulate single semiconductor characteristics

    http://nanohub.org/resources/semi

  17. Periodic Potential Lab

    19 Jan 2008 | Tools | Contributor(s): Abhijeet Paul, Junzhe Geng, Gerhard Klimeck

    Solve the time independent schrodinger eqn. for arbitrary periodic potentials

    http://nanohub.org/resources/kronig_penney

  18. Carrier Statistics Lab

    08 Jan 2008 | Tools | Contributor(s): Saumitra Raj Mehrotra, Abhijeet Paul, Gerhard Klimeck

    Calculate the electron & hole density in semiconductors

    http://nanohub.org/resources/fermi

  19. Crystal Viewer Tool

    22 Dec 2007 | Tools | Contributor(s): Saumitra Raj Mehrotra, Michael Povolotskyi, Sebastian Steiger, Tillmann Christoph Kubis, Abhijeet Paul, Xingshu Sun, Victoria Savikhin, Gerhard Klimeck

    Visualize different crystal lattices and planes

    http://nanohub.org/resources/crystal_viewer

  20. MOS Capacitors: Description and Semiclassical Simulation With PADRE

    26 Jun 2006 | Online Presentations | Contributor(s): Dragica Vasileska

    Introduction of Quantum-Mechanical Effects in Device Simulation

    http://nanohub.org/resources/1596

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