Bound States Lab Learning Materials

by Dragica Vasileska, Gerhard Klimeck

by Dragica Vasileska and Gerhard Klimeck


By completing the Bound States Calculation Lab in Bound States Calculation Lab, users will be able to: a) understand the concept of bound states, b) the meaning of the eigenvalues and the eigenvectors, and c) the form of the eigenvalues and eigenvectors for rectangular, parabolic and triangular confinement.

The specific objectives of the Bound States Calculation Lab are:


Recommended Reading

Users who are new to the concept of bound states and solution of the Schrodinger equation for bound states should consult the following resources:

1. D. K. Ferry:

2. S. Datta


PN Junction Lab: First-Time User Guide

PN Junction Lab Demonstration: Asymmetric PN Junctions

Theoretical descriptions

* Tutorial_PADRE_Simulation_Tools.pdf (tutorial)

* Physical and Analytical Description of the Operation of a PN Diode (physical, analytical model)

* PN junction in forward bias (simulation)

* Numerical solution of the Drift-Diffusion Equations for a diode (computational model)

* Drift-Diffusion Modeling and Numerical Implementation Details (implementation details and source code dissemination)

Tool Verification

Verification of the PN-Junction tool is done by comparison of the simulation results for the electric field in equilibrium with the depletion charge approximation results. This verification process can be done only while running the tool, as it superimposes the depletion charge approximation results.

Verification of the Validity of the PN Junction Tool


The following Worked Examples for a PN Diode are described in detail:

Example 1: Equilibrium PN-Junction

Example 2: PN-Junction Under Bias

Example 3: Non-Symmetric Junction

Example 4: Series Resistance

Exercises and Homework Assignments

1. Basic operation of a PN diode - Theoretical exercise

2. Homework for PN Junctions: Depletion Approximation (ECE 305)

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

4. PN Diode Exercise: Series Resistance

5. Exercise: PIN Diode

6. PN Diode Exercise: Graded Junction

7. PN diode - Advanced theoretical exercises

8. Schottky diode - Theoretical exercises

Solutions to Exercises

Solutions are provided only to instructors!


This test will assess the users conceptual understanding of the physical, mathematical and computational knowledge related to the operation and modeling of PN Junctions.

ABACUS: Test for PN Junction Lab


Users are challenged to integrate what they have learned about PN Junctions.

Solve a Challenge for a PN Diode

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