$mobility-model-masetti

The Masetti bulk mobility model ([MasettiIEEE1983]) is used to simulate the doping dependent mobility in Si and takes into account the scattering of the carriers by charged impurity ions which leads to a degradation of the carrier mobility (ionized impurity scattering). This model is temperature independent and the parameters are given for 300 K. Thus it is only valid for 300 K.

The total concentration of ionized impurities is given by N_D+N_A.

Note: We use the nominal dopant concentration as specified in the input file and not the ionized one.

The low-doping reference mobility µ_const^n,p is determined by the constant mobility-model (i.e. the values in the database under keyword $mobility-model-constant are the same as under this keyword). It is a model that combines lattice and impurity scattering.

Parameter in formula		Description	Input parameter
electrons	holes		electrons	holes
µmin1n	µmin1p	reference mobility parameter	n-mu-min1	p-mu-min1
µmin2n	µmin2p	reference mobility parameter	n-mu-min2	p-mu-min2
µ1n	µm1p	reference mobility parameter	n-mu-1	p-mu-1
Pcn	Pcp	reference doping concentration parameter	n-pc	p-pc
Crn	Crp	reference doping concentration parameter	n-cr	p-cr
Csn	Csp	reference doping concentration parameter	n-cs	p-cs
an	ap	reference doping concentration parameter	n-alpha	p-alpha
bn	bp	reference doping concentration parameter	n-beta	p-beta
µconstn	µconstp	result of$mobility-model-constant
ND	NA	concentration of ionized donors/acceptors

$mobility-model-masetti                              optional !

 material-name                       character       required !
 number-of-parameters                integer         required !

 !++++++++++++++++++++++++++++++++++++
 ! for binaries, e.g. GaAs
 !++++++++++++++++++++++++++++++++++++
 n-mu-lattice-temp                   double          optional ! [cm2/Vs]  same as $mobility-model-constant
 n-gamma-lattice-temp                double          optional ! []        same as $mobility-model-constant
 n-mu-min1                           double          optional ! [cm2/Vs]
 n-mu-min2                           double          optional ! [cm2/Vs]
 n-mu-1                              double          optional ! [cm2/Vs]
 n-pc                                double          optional ! [cm-3]
 n-cr                                double          optional ! [cm-3]
 n-cs                                double          optional ! [cm-3]
 n-alpha                             double          optional ! []
 n-beta                              double          optional ! []
                                                              !
 p-mu-lattice-temp                   double          optional ! [cm2/Vs]  same as $mobility-model-constant
 p-gamma-lattice-temp                double          optional ! []        same as $mobility-model-constant
 p-mu-min1                           double          optional ! [cm2/Vs]
 p-mu-min2                           double          optional ! [cm2/Vs]
 p-mu-1                              double          optional ! [cm2/Vs]
 p-pc                                double          optional ! [cm-3]
 p-cr                                double          optional ! [cm-3]
 p-cs                                double          optional ! [cm-3]
 p-alpha                             double          optional ! []
 p-beta                              double          optional ! []
                                                              !
                                                              !
 !++++++++++++++++++++++++++++++++++++
 ! for ternaries, e.g. Al(x)Ga(1-x)As
 !++++++++++++++++++++++++++++++++++++
 n-bow-mu-lattice-temp               double          optional ! [cm2/Vs] for alloys
 n-bow-gamma-lattice-temp            double          optional ! []       for alloys
 n-bow-mu-min1                       double          optional ! [cm2/Vs] for alloys
 n-bow-mu-min2                       double          optional ! [cm2/Vs] for alloys
 n-bow-mu-1                          double          optional ! [cm2/Vs] for alloys
 n-bow-pc                            double          optional ! [cm-3]   for alloys
 n-bow-cr                            double          optional ! [cm-3]   for alloys
 n-bow-cs                            double          optional ! [cm-3]   for alloys
 n-bow-alpha                         double          optional ! []       for alloys
 n-bow-beta                          double          optional ! []       for alloys
                                                              !
 p-bow-mu-lattice-temp               double          optional ! [cm2/Vs] for alloys
 p-bow-gamma-lattice-temp            double          optional ! []       for alloys
 p-bow-mu-min1                       double          optional ! [cm2/Vs] for alloys
 p-bow-mu-min2                       double          optional ! [cm2/Vs] for alloys
 p-bow-mu-1                          double          optional ! [cm2/Vs] for alloys
 p-bow-pc                            double          optional ! [cm-3]   for alloys
 p-bow-cr                            double          optional ! [cm-3]   for alloys
 p-bow-cs                            double          optional ! [cm-3]   for alloys
 p-bow-alpha                         double          optional ! []       for alloys
 p-bow-beta                          double          optional ! []       for alloys
                                                              !
$end_mobility-model-masetti                          optional !