4. nextnano.NEGF

The nextnano.NEGF tool is designed for accurate quantum simulations of semiconducting devices using the Non-Equilibrium Green Functions (NEGF) formalism. It has been originally developed to simulate electron dynamics and gain in quantum cascade lasers (QCLs) and superlattices. It can also be apply to infrared detectors such as quantum well infrared detectors (QWIPs) and quantum cascade detectors (QCDs), as well as transport in resonant tunneling diodes (RTDs). It is progressively extended to further applications such as interband devices.

Note

Migration from the old website https://nextnano-docu.northeurope.cloudapp.azure.com/dokuwiki/doku.php?id=qcl:input_file to this documentation is ongoing. Full (but not up-to-date) information can be found in the old website.

• 4.1. Overview
• 4.2. Models
  • Electronic band structure
  • Gain spectrum by Fermi’s golden rule
• 4.3. Material Database
• 4.4. Tutorials
  • THz QCLs
  • Mid-IR QCLs
  • AlGaAs/GaAs RTD
  • — DEV — Interband cascade laser: gain enhancement by carrier-rebalancing
• 4.5. Keywords
  • Temperature
  • Bias{ }
  • SweepParameters{ }
  • Equilibrium{ }
  • Crystal{ }
  • Contacts{ }
  • Hybrid{ }
  • Materials{ }
  • OverwriteMaterialdatabase{ }
  • Structure{ }
  • Scattering{ }
  • Poisson
  • LateralDiscretization{ }
  • SimulationParameter{ }
  • Output{ }
  • Gain{ }
  • SurfaceRoughness{ }
  • EMfield{ }
• 4.6. Input Syntax
• 4.7. Command Line
• 4.8. Release Notes
  • 2024-09-16
  • 2024-07-25
  • 2024-06-21
  • 2024-05-23
  • 2024-03-14
  • 2023-12-01
  • 2023-05-25
  • 2023-02-22
• 4.9. Release Notes (Classic)
  • 2024-01-17
  • 2022-06-13
  • 2022-04-29
  • 2022-03-14