Imported 25-nm n-MOSFFET : Imported 25-nm n-MOSFFET

Requires: MC Device
Minimum Versions: Atlas 5.28.1.R

This example demonstrates 2D Monte Carlo device modeling of a silicon n-MOSFET by importing the mesh, regions, and doping from a Silvaco structure file.

For all aspects of this example apart from the IMPORT statement, please see mcdeviceex02.

In preparation for this example, we generated the same structure used in mcdeviceex02 using Atlas outside the MCDEVICE module and saved it in the mcdeviceex05_atlas.str file. This example uses the IMPORT statement to import structure information from this file into MCDEVICE.

The MESH, REGIONS , and DOP parameters on the IMPORT statement are set to TRUE . This indicates that all three aspects will be imported from the structure file specified by the STRFILE parameter. The TYPE parameter is set to 8 to indicate that the file is a Silvaco structure file.

The initial definitions of the source, drain, gate, and substrate regions are imported from the mcdeviceex05_atlas.str file. The REGION statements change the TYPE parameter for these regions from MC to CONTACT .

Specify all contact definitions in your input file either by changing the TYPE parameter of imported regions (as shown here) or by adding new contact definitions. This is true since flat contacts are ignored by IMPORT statements and contact regions are imported as TYPE=MC .

All aspects of the structure can be modified after import and prior to a SOLVE statement by using the XMESH, YMESH, REGION , and DOPING statements. In this case, just the TYPE parameters of the contact regions were changed and all other structure information from the import were retained.

To load and run this example, select the Load button in DeckBuild > Examples. This will copy the input file and any support files to your current working directory. Select the Run button in DeckBuild to execute the example.