.. currentmodule:: tidy3d Charge Mediums ------------------------------- The electrical behaviour assigned to a structure's ``medium.charge``. Conductors and insulators set contacts and dielectric regions; the semiconductor medium carries the doping, mobility, recombination and band models that the drift-diffusion solver uses. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst ChargeConductorMedium ChargeInsulatorMedium SemiconductorMedium Mobility ^^^^^^^^^^^^^^ Carrier mobility models assigned to ``SemiconductorMedium.mobility_n`` and ``mobility_p``. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst ConstantMobilityModel CaugheyThomasMobility MasettiMobility .. note:: ``MasettiMobility`` is supported only on the accelerated solver. Generation Recombination ^^^^^^^^^^^^^^^^^^^^^^^^^ Carrier generation and recombination models contributing to the drift-diffusion source terms. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst AugerRecombination RadiativeRecombination ShockleyReedHallRecombination FossumCarrierLifetime PalankovskiQuayApproxCarrierLifetime DistributedGeneration HurkxDirectBandToBandTunneling SelberherrImpactIonization .. note:: At most one ``ShockleyReedHallRecombination`` model may be specified per medium; if several are provided only the last one is used. Doping ^^^^^^ Spatial dopant distributions applied to a semiconductor medium. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst ConstantDoping GaussianDoping CustomDoping Bandgap ^^^^^^^ Bandgap-narrowing models for heavily doped semiconductors. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst SlotboomBandGapNarrowing Effective Density Of States (DOS) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Effective density-of-states models for the conduction and valence bands. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst ConstantEffectiveDOS IsotropicEffectiveDOS MultiValleyEffectiveDOS DualValleyEffectiveDOS Energy Bandgap ^^^^^^^^^^^^^^ Temperature dependence of the semiconductor energy bandgap. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst ConstantEnergyBandGap VarshniEnergyBandGap Charge Carrier Properties ------------------------------------ Models describing how the optical properties of a medium change with the local carrier concentration. .. autosummary:: :toctree: ../_autosummary/ :template: module.rst LinearChargePerturbation CustomChargePerturbation