quantum{ region{ excitons{} } }¶
An optional group triggering computation of binding energies of excitons.
Note
This feature is under development.
Attention
This model can be used only for 1D simulations.
- electron_mass
Effective mass of electron involved in the exciton
- type:
real
- values:
1e-3 < x < 10
- default:
volume average of values from database
- hole_mass
Effective mass of hole involved in the exciton
- type:
real
- values:
1e-3 < x < 10
- default:
volume average of values from database
- density_averaged_masses
Effective masses of hole and electron are averaged with weights taken from probability densities of related states
- type:
choice
- values:
yes
orno
- default:
no
- dielectric_const
Effective dielectric constant assumed for electron-hole Coulomb interaction; If no explicit value of the dielectric constant is set, then the material values of the static dielectric constant (as given by the database and used in Poisson equation) are volume-averaged over the quantum region
- type:
real
- values:
1 < x < 1e3
- default:
volume average of values from database
- energy_cutoff
Maximum energy difference of electron and hole states involved in forming exciton
- type:
real
- values:
1e-3 < x
- accuracy (optional)
Accuracy used in minimisation procedure to compute the exciton binding energy
- type:
real
- values:
1e-10 < x < 0.1