The nextnano.NEGF package is a cutting-edge package specifically designed for modelling quantum transport in planar structures. This package is the best choice for precise simulations of Quantum Cascade Lasers (QCLs) and Quantum Cascade Detectors (QCDs), Superlattices, and Resonant Tunnelling Diodes (RTDs). With the nextnano.NEGF package, you gain access to advanced computational capabilities, which includes calculation of band structures, energy-resolved carrier densities and the density of states, optical gain, output power and L-I-V characteristics, wall-plug efficiency, and much more. We are proud to say that nextnano.NEGF is truly the best commercially available tool for modeling quantum transport in QCLs.
nextnano.NEGF is an advanced computational tool and the core engine of the nextnano.NEGF package. It utilizes the cutting-edge Non-Equilibrium Green Functions (NEGF) formalism to accurately model quantum transport in planar structures, taking into account a range of scattering processes including longitudinal polar-optical phonon scattering, acoustic phonon scattering, charged impurity scattering, interface roughness scattering, alloy scattering, and electron-electron scattering.
Developed with the aim of providing highly accurate results within a finite computation time for 1D systems, nextnano.NEGF is also capable of computing optical spectra. The combination of these features, along with the coverage of various scattering processes, makes it an ideal tool for top-notch simulations of heterostructures such as quantum cascade lasers (QCLs) and resonant tunneling diodes (RTDs).
The nextnano.NEGF tool is designed for realistic and accurate quantum simulations of semiconducting devices using the Non-Equilibrium Green Functions (NEGF) formalism. It simulates the electron transport and optical properties of various semiconducting devices consisting of one-dimensional heterostructures such as:
- Quantum cascade lasers (QCLs)
- Quantum cascade detectors (QCDs)
- Resonant tunneling diodes (RTDs)
- Quantum-well infrared detectors (QWIPs)
- Superlattices (SLs)
- Type-II superlattices (T2SL)
- Interband cascade lasers (ICLs)
The NEGF formalism is a powerful framework to model quantum transport in the presence of scattering processes. The following scattering mechanisms are included:
- Longitudinal optical (LO) phonon scattering
- Acoustic phonon scattering
- Charged impurity scattering
- Interface roughness scattering
- Alloy scattering
- Electron-electron scattering
