Introduction ¶ DEVSIM is semiconductor device simulation software which uses the finite volume method. (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.

White Papers • Semiconductor Device Simulation Using DEVSIM 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 • Symbolic Model Evaluation for TCAD Device Simulation Symbolic model evaluation is a powerful method for developing models for technology computer-aided design (TCAD) device simulation. It gives users the ability to accurately describe physical phenomena. Coupled with automatic creation of derivative expressions, new models can be rapidly developed with performance rivaling source code approaches. A new device simulation tool is presented with a drift-diffusion example.

• TCAD Sensitivity Analysis for Device Optimization We explore the use of sensitivity analysis for technology computer-aided design (TCAD) optimization. By directly coupling device response to model parameters, our approach may be used to generate derivatives for gradient-based optimization.

An example is presented for inverse modeling of a doping profile. We compare the number of simulations required, and accuracy, to a design of experiments (DOE) based optimization.