SRH-recombination
Please refer to the database section for
$SRH-recombination for
more details.
The generation/recombination process can be assisted by impurities. This is
modeled by the Shockley-Read-Hall model (SRH). The formulas and parameters have
been taken from the
SIMBA
manual. The recombination/generation rates depend on the
deviation of the carrier concentration from the equilibrium value and the
scattering rates depend on the doping concentration.
| Parameter |
Description |
Input parameter |
Units |
| Nn,ref |
reference doping concentration for electrons |
n-N-ref |
[cm-3] |
| taun,0 |
zero doping scattering time for electrons |
n-tau |
[s] |
| Np,ref |
reference doping concentration for holes |
p-N-ref |
[cm-3] |
| taup,0 |
zero doping scattering time for holes |
p-tau |
[s] |
!----------------------------------------------------!
$SRH-recombination
optional !
!
material-name
character
required !
number-of-parameters
integer
required !
!
n-N-ref
double
optional ! [cm-3] for electrons
n-tau
double
optional ! [s]
!
p-N-ref
double
optional ! [cm-3]
p-tau
double
optional ! [s]
!
n-bow-N-ref
double
optional ! [cm-3]
n-bow-tau
double
optional ! [s]
!
p-bow-N-ref
double
optional ! [cm-3]
p-bow-tau
double
optional ! [s]
!
$end_SRH-recombination
optional !
!----------------------------------------------------!
Syntax:
material-name = GaAs
Name of material to which this set of parameters applies. Name has to be
listed in $default-materials.
number-of-parameters = 4
Control parameter if the number of parameters provided
is the same as demanded.
n-N-ref = 1.0d19 ! [cm-3]
n-tau = 1.0d-9
!
[s]
p-N-ref = 1.0d18 !
[cm-3]
p-tau = 1.0d-9
!
[s]
The parameters are specified as shown in the tables above. There are two
sets, one for electrons (n-) and one for holes (p-).
For ternary alloys there are also bowing parameters possible (n-bow-/p-bow-).
Please refer to the database section for
$SRH-recombination for more
details. | 
