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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.

### Teaching Materials (1-20 of 59)

1. Tunneling Through Triangular Barrier: an Exercise for PCPBT

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

This exercise teaches the users that a very good result can be obtained when the triangular barrier is approximated with 11 segment piece-wise constant potential barrier...

http://nanohub.org/resources/5102

2. ABACUS Exercise: Carriers Distribution vs. Energy

20 Jul 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

The objective of this problem is to teach the students how the occupancy function changes with temperature, therefore affecting the population of available energy states in the conduction and...

http://nanohub.org/resources/9356

3. ABACUS Exercise: Conductivity and Carrier Concentration

20 Jul 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

The objective of the first problem is to teach the students how to calculate carrier conductivity in a bulk semiconductor material. The objective of the second problem is to calculate the electron...

http://nanohub.org/resources/9359

4. ABACUS Exercise: Crystal Lattices and Miler Indices

20 Jul 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

The objective of these assignments is to teach the students about crystal lattices and Miler indices for planes and directions.

http://nanohub.org/resources/9361

5. ABACUS: Test for BJT lab Tool

06 Oct 2010 | Teaching Materials | Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck

The objective of this test is to give an idea to a self-learning student or to instructors in the case this test is used in a classroom the level of understanding of this topic when students have...

http://nanohub.org/resources/9834

6. ABACUS: Test for Crystal Viewer Tool

05 Aug 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

The objective of this test is to give an idea to a self-learning students or to instructors in the case this test is used in a classroom the level of understanding of this topic when students have...

http://nanohub.org/resources/9456

7. ABACUS: Test for MOSFET Tool

18 Oct 2010 | Teaching Materials | Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck

The objective of this test is to give an idea to a self-learning students or to instructors in the case this test is used in a classroom the level of understanding of this topic when students have...

http://nanohub.org/resources/9882

8. Basic operation of a PN diode - Theoretical exercise

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

These exercises help the students better understand the operation of conventional, p+n and short diode.www.eas.asu.edu/~vasileskNSF

http://nanohub.org/resources/5177

9. BJT - Simulation Exercise

03 Aug 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This simulation exercise teaches the students the operation of BJT transistor, what is current gain and how one extracts current gain from the Gummel plot. It also provides output device...

http://nanohub.org/resources/5199

10. BJT - Theoretical Exercise

03 Aug 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

www.eas.asu.edu/~vasileskNSF

http://nanohub.org/resources/5193

11. BJT Lab - Amplifier

31 Jan 2011 | Teaching Materials | Contributor(s): Saumitra Raj Mehrotra

This real life problem designs and calculates the AC amplification ratio for a Common-Emitter configuration npn type BJT.

http://nanohub.org/resources/10685

12. BJT Lab Worked Out Problem 1

01 Feb 2011 | Teaching Materials | Contributor(s): Saumitra Raj Mehrotra

This sample worked out problem analyzes the output characteristic curves of an npn BJT transistor and extracts the relevant parameters.

http://nanohub.org/resources/10732

13. BJT Lab Worked Out Problem 2

02 Feb 2011 | Teaching Materials | Contributor(s): Saumitra Raj Mehrotra

This sample worked out problem simulated a pnp type BJT in Common Base configuration and calculates AC and DC amplification ratios.

http://nanohub.org/resources/10748

14. BJT Problems and PADRE Exercise

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

This set of problems makes the students familiar with h-parameters and they also teach them how to write the input deck for simulation of BJT device to obtain the Gummel plot, the output...

http://nanohub.org/resources/5051

15. Bulk Band Structure: a Simulation Exercise

03 Aug 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

This simulation exercise teaches the students about band structure of indirect and direct bandgap materials, the optical gaps, the concept of the effective mass and the influence of spin-orbit...

http://nanohub.org/resources/5201

16. Can we define unique effective masses in Si nanowires?

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

This exercise teaches the users that for small nanostructures the concept of the effective mass becomes vague and in order to properly describe nanostructures one has to take into account the...

http://nanohub.org/resources/4880

17. Computational Electronics HW - Simplified Band Structure Model

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

www.eas.asu.edu/~vasileskNSF

http://nanohub.org/resources/5031

18. Conductivity - Theoretical Exercise

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

www.eas.asu.edu/~vasileskNSF

http://nanohub.org/resources/5181

19. Crystal Viewer Tool: First-Time User Guide

01 Jun 2009 | Teaching Materials | Contributor(s): Abhijeet Paul, Benjamin P Haley, Gerhard Klimeck

This first-time user guide is an introduction to the Crystal Viewer Tool lab. It provides basic definitions, including a definition of crystals. Any suggestions for changes and corrections are...

http://nanohub.org/resources/6788

20. Drift Diffusion Lab: First-Time User Guide

13 Jun 2009 | Teaching Materials | Contributor(s): Saumitra Raj Mehrotra, Benjamin P Haley

This first-time user guide provides introductory material to Drift Diffusion Lab on nanoHUB. It includes a tour of the Rappture interface, which notes key inputs and typical outputs. It also...

http://nanohub.org/resources/6902

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nanoHUB.org, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.