DEVSIM simulation example slides are presented here:
Semiconductor Device Simulation Using DEVSIM
SISPAD 2018 in Austin, TX
SISPAD 2018 will be September 24-26th in Austin, TX.
The SISPAD conference series provides an open forum for the presentation of the latest results and trends in process and device simulation. The conference is the leading forum for Technology Computer-Aided Design (TCAD) and is held alternatingly in the United States, Japan, and Europe in September.
DEVSIM manual source files available
The source files to the DEVSIM manual are now available from:
https://github.com/devsim/devsim_documentation
Density Gradient Method
The Density Gradient Method has been implemented as a simulation example for DEVSIM. This method is a quantum mechanical correction for carrier densities near a semiconductor/insulator interface.
The example scripts simulate both a 1D and 2D MOSCAP structure. The scripts generate plots to visualize the results.
It can be downloaded from https://github.com/devsim/devsim_density_gradient.
Semiconductor Device Simulation Using DEVSIM
Semiconductor Device Simulation Using DEVSIM is now available from our site.
Abstract:
DEVSIM is a technology computer aided design (TCAD) simulation software. It is released under an open source license. The software solves user defined partial differential equations (PDEs) on 1D, 2D, and 3D meshes. It is implemented in C++ using custom code and a collection of open source libraries. The Python scripting interface enables users to setup and control their simulations.
In this chapter, we present an overview of the tool. This is followed with a bipolar junction transistor (BJT) design and characterization example. A collection of open source tools were used to create a simulation mesh, and visualize results
The Python scripts for simulation are here:
https://github.com/devsim/devsim_bjt_example
DEVSIM under new open source license
The DEVSIM source code is now released under the Apache License, Version 2.0. It was previously under the LGPL 3.0. The license change is intended to promote adoption of the software and attract new contributors. A brief synopsis of the license is here.
The spirit of the Apache License is also more in line with the license terms packages that DEVSIM relies upon. More information about DEVSIM is available from https://www.devsim.org.
Verilog A Best Practices Paper
The IEEE Journal of the Electron Devices Society has published an article titled:
Best Practices for Compact Modeling in Verilog-A
The article is freely available for download via open access. It covers how to avoid many of the pitfalls in using Verilog-A compact modeling. It is unclear if this might be related to the effort described in our previous post.
TCAD Central
One of the other sites I manage is TCAD Central – https://www.tcadcentral.com. It is a resource concerning TCAD and semiconductor device simulation. Some of the content is no longer current. Please let me know if you have any updates or news in this blog or on the TCAD Central site.
3D TCAD FINFET Models
An interesting project from the IuE Summer of Code 2014 is a collection of 3D CAD models. On the CAD models page are examples of these devices.
- MOSFET and Single-Gate
- Double-Gate
- Tri Gate
- All-Around-Gate
- FlexFET
- Special Gate-Form Devices
Using the FreeCAD open source CAD modeling software. The student created these models from examples in the literature. There are also tutorials at the bottom of the page for building a Double-Gate MOSFET and Tri-Gate devices.
2dmatter.com
The NanoTCAD ViDES team has announced their new website, http://www.2dmatter.com.
From their announcement:
The website is intended to be a useful tool in order to link to all the recent publications concerned with Two-dimensional materials from the main journals in the field, i.e., (up to now) Physical Review Letters, Physical Review B, Applied Physics Letters, IEEE Transaction on Electron Devices, IEEE Electron Device Letters, IEEE Nanotechnology, Proceedings of IEEE, Scientific Reports, Nature Nanotechnology, ACS NANO and Nano Letters.