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TCAD DeviceSimulator.
DEVSIM is a semiconductordevice simulation software, using the finite volume method. This software solves partial differential equations on a mesh. The Python interface allows the user to specify their own equations.
FSEM is a set of freeFEM++ scripts and C++ code to solve the drift-diffusion (DD) semiconductordevice equations by the finite element method (FEM). It was initially developed for the nonlinear study of semiconductors under high optical injection.