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Verification of the Validity of the BJT Tool

24 Aug 2010 | Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck

A pnp BJT in Common-Base configuration is analyzed both analytically and numerically using BJT Lab. DC current gain and Output characteristics are computed.MATLAB script used is also available for download.

MOSCAP Worked out problems (Basic)

19 Aug 2010 | Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck

A simple MOSCAP is analyzed under different operation modes namely: Accumulation, near threshold and Inversion.

Drift Diffusion Lab Worked out problems (Drift)

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

This sample worked out problem illustrated the concept of mobility. Mobility values are computed for different material and doping levels.

Drift Diffusion Lab Worked out problems (Diffusion)

16 Aug 2010 | Contributor(s): Saumitra Raj Mehrotra, Dragica Vasileska, Gerhard Klimeck

A sample problem is worked out using Drift-Diffusion lab. The problem statement deals with the concept of diffusion in semiconductors.

Worked Examples for Carrier Statistics (advanced)

Two worked out examples based on Fermi-Dirac Vs Maxwell-Boltzmann statistics and temperature effects are presented.

ABACUS: Test for MOSCAP Tool

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 gone through the learning material, worked exercises and have completed the assignments and the...

Worked Examples for Carrier Statistics (basic)

Several worked out examples are presented that illustrate the basic concept of carrier concentration in semiconductors.

Drift Diffusion - Temperature Sensor

The fact that mobility of a semiconductor varies with temperature is used to design a temperature sensor in this test.

ABACUS: Test for Drift Diffusion Lab

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

Verification of the Validity of the Drift-Diffusion Lab Tool

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

Drift-Diffusion Lab results are verified analytically. In the first test minority carrier concentration is computed in a semiconductor slab with constant carrier Generation rate (/cm3.s). In the second test bias is applied across a semiconductor slab and current is computed both analytically and...

Verification of the Validity of the MOSCap Tool

Numerical results for Surface Potential Vs Gate Bias are compared with analytical results to prove the validity of MOSCap Lab.

Carrier Statistics - Temperature Effects

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

Silicon (Si), Germanium (Ge) and Gallium-Arsenide (GaAs) are commonly used materials for MOS Field Effect Transistor (MOSFET) fabrication. MOSFET structures are commonly doped to achieve the desired switching operation and doping is a critical parameter in MOSFET designing.The goal in this test...

ABACUS: Test for Carrier Statistics Tool

ABACUS: Test for Bandstructure Lab

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

This is a test that examines ones understanding of electronic structure once he/she has gone through the materials and exercises provided on the nanoHUB as part of the ABACUS Bandstructure topic page and running the Bandstructure Lab.

Verification of the Validity of Bulk Bandstructure Lab

This set of slides compares the optical gaps for Si, Ge and GaAs with those given in www.ioffe.ru, thus verifying the validity of the bulk Bandstructure Lab tool.

Carrier Statistics Tool Verification

This test verifies the Carrier Statistics Tool by comparing the numerically computed and analytically extracted, electron and hole carrier densities. The results are close within 2% of margin.

ABACUS: MOSFET - Diffusion Process

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

The goal of this assignment is to make familiar the students the required doses in the diffusion step of fabrication of semiconductor devices to get certain values of the volume doping densities.

ABACUS: Test for PN Junction Lab

ABACUS: Test for PCPBT Lab

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

ABACUS: Test for Periodic Potential Lab

ABACUS: Test for Crystal Viewer Tool

ABACUS Exercise: Bandstructure – Kronig-Penney Model and Tight-Binding Exercise

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

The objective of this exercise is to start with the simple Kronig-Penney model and understand formations of bands and gaps in the dispersion relation that describes the motion of carriers in 1D periodic potentials. The second exercise examines the behavior of the bands at the Brillouin zone...

SCHRED Exercise: MOS Capacitor Analysis

The objective of this exercise is to examine the influence of semiclassical and quantum-mechanical charge description on the low-frequency CV-curves. It also teaches one the influence of poly-gate depletion on the low-frequency CV-curves.

ABACUS Exercise: Light Shining on a Semiconductor

The objective of this exercise is to examine the behavior of semiconductors under illumination with light.

AQME Exercise: Bound States – Theoretical Exercise

The objective of this exercise is to teach the students the theory behind bound states in a quantum well.