TCAD
Meshing Options

Two state-of-the-art approaches for the automatic generation of meshes are available. The quadtree/octree-based method Mesh creates meshes with an axis-aligned structure that is fitted to the boundary. The mesh generator Noffset3D is fully unstructured and pays special attention to mesh elements near material interfaces.

Both methods create meshes that can be used for the discretization methods used in Synopsys process and device simulators. The meshes are adapted to the geometry and the doping concentration in order to capture steep gradients. Refinement is partly performed with anisotropic (stretched) elements, which means that meshes with fewer elements can be used to speed up the simulation without losing accuracy.

Mesh Benefits

• Sophisticated handling of templates using quadtree/octree methods
• Mixed-element meshes or tetrahedral meshes
• Highly anisotropic elements along coordinate axis
• Adaptation algorithms capture high gradient data (such as p-n junctions)

Noffset3D Benefits

• Normal offsetting method with fast point insertion
• Layers of anisotropic elements along material boundaries or isosurfaces (such as p-n junctions)
• Very general isotropic refinement away from boundaries and isosurfaces
• Inclusion of axis-aligned structured point sets of user-defined points