2.1. Overview

Running

The nextnano++ tool is a console application that is run from within nextnanomat (nextnanomat). Alternatively, it can be executed from the command line (Command Line). The input file specifies the device that shall be simulated.

Input file

The input file specifies all properties of the device, such as geometry, material composition, grid, contacts,… Furthermore, it sets all parameters that are needed to define the program flow of nextnano++. The keywords that can be used for this purpose are defined in the syntax (Input Syntax) of the input file.

Output

The nextnano++ tool exports its results to a directory and in a certain format that have to be specified in the section (Simulation Output) of the input file.

Examples

The nextnano++ installation provides some example input files (Tutorials) (C:\Program Files\nextnano\2020_12_09\Sample files\nextnano++ sample files) that can be run with nextnanomat, to get familiar with the program.

Material database

All material properties that are needed for simulation are specified as material parameters in database files (database{ }), which are provided with the nextnano++ installation. The database covers a large amount of Zincblende-related …zb{} groups in database{ } (all III-V and diamond-type like Si, Ge, …), Wurtzite-related …wz{} groups in database{ } (GaN, AlN, InN, …) materials, and their alloys.

If you have further questions, see the Frequently Asked Questions (FAQ) or contact nextnano Help Center.