New release of the DEVSIM® Semiconductor Device Simulator
December 18, 2018: DEVSIM LLC announces the release of version 1.0 of the DEVSIM® TCAD Semiconductor Device Simulator. Open source since 2013, DEVSIM® uses finite volume methods to solve for the electrical behavior of semiconductor devices on a mesh. In addition to the standard drift-diffusion equations, the density-gradient method can be used to account for quantum effects near semiconductor insulator boundaries. This approach is suitable for:
- Simulating Advanced Semiconductor Devices
- Capacitance Extraction
- Generalized PDE Simulation
In this release, the software has been extended to support easier integration into existing Python installations on macOS, Microsoft Windows, and Linux operating systems. In addition, the version numbering system has been adapted to reflect major and minor changes to the software.
DEVSIM® is available from https://devsim.org. The site include more information for those who wish to use or participate in development of this software.
About DEVSIM LLC
DEVSIM LLC was founded in 2008 to provide TCAD simulation software and programming services. For more information, please visit https://devsim.com.
DEVSIM® is a registered trademark of DEVSIM LLC. All product names, trademarks and registered trademarks are property of their respective owners.
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.
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.
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 Some of the content is no longer current.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.
Sandia National Labs is looking for a TCAD software engineer who is a US citizen and is able to get a security clearance. From their description:
We have an immediate technical staff opening for a semiconductor device modeling software developer with expertise in scientific programming for high performance computing. The position emphasizes algorithm design and enhancement to extend the capabilities and increase the efficiency of our large scale, parallel, drift-diffusion solver, which is a C++/object oriented program. The successful candidate will be part of a team of computational scientists and semiconductor device physicists. Additionally, the position requires extensive interaction with experimental and theoretical physicists and research engineers working on characterizing radiation effects in microelectronic devices and the resulting changes to circuit performance.
I was aware that they had a software named Charon, which leveraged a commercial tool. It looks like they may be developing their own replacement. A quick google search revealed a mailing list for their git archives of the tool. It appears the tool has been in development at least since January 2012.
Sefer Bora Lişesivdin announced the release of Aestimo GPL 1D Schrödinger-Poisson solver last month. From his announcement on LinkedIn:
Aestimo Team is proud to release the version 0.9 of Aestimo 1D Self-consistent Schrödinger-Poisson Solver. This version includes many bugfixes, speed improvements, cython code additions, rewritten VBMAT-V part to use numpy better, merging conduction and valance band calculations and more. Code is heavily modified and stabilized.
The software is available for download from: https://bitbucket.org/sblisesivdin/aestimo/downloads.
The DEVSIM Open Source TCAD Simulator is now available for download at SourceForge. Packages are available for:
- Mac OS X Mavericks
- Red Hat 6.5
- Ubuntu 12.04
For more information about the project, including source code availability, please visit https://www.devsim.org.
I’ve started a new website at https://www.tcadcentral.com. It is a wiki dedicated to technology computer aided-design. Please check it out, and let me know if you have suggestions, or would like to participate.