src/material/InAs/InAs_mob_Analytic.cc

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*              8888888         88888888         88888888                    */
   4 /*            8                8                8                            */
   5 /*           8                 8                8                            */
   6 /*           8                  88888888         88888888                    */
   7 /*           8      8888                8                8                   */
   8 /*            8       8                 8                8                   */
   9 /*              888888         888888888        888888888                    */
  10 /*                                                                           */
  11 /*       A Two-Dimensional General Purpose Semiconductor Simulator.          */
  12 /*                                                                           */
  13 /*  GSS material database Version 0.4                                        */
  14 /*  Last update: Feb 17, 2006                                                */
  15 /*                                                                           */
  16 /*  Gong Ding                                                                */
  17 /*  gdiso@ustc.edu                                                           */
  18 /*  NINT, No.69 P.O.Box, Xi'an City, China                                   */
  19 /*                                                                           */
  20 /*****************************************************************************/
  21 //
  22 // Material Type: InAs
  23
  24
  25 #include "PMI.h"
  26
  27 class GSS_Mob_Analytic : public PMIS_Mobility
  28 {
  29
  30 private:
  31   // parameters for Analytic mobility
  32   PetscScalar Ar_mumin_n;
  33   PetscScalar Ar_mumin_p;
  34   PetscScalar Ar_alm_n  ;
  35   PetscScalar Ar_alm_p  ;
  36   PetscScalar Ar_mud_n  ;
  37   PetscScalar Ar_mud_p  ;
  38   PetscScalar Ar_ald_n  ;
  39   PetscScalar Ar_ald_p  ;
  40   PetscScalar Ar_N0_n   ;
  41   PetscScalar Ar_N0_p   ;
  42   PetscScalar Ar_alN_n  ;
  43   PetscScalar Ar_alN_p  ;
  44   PetscScalar Ar_a_n    ;
  45   PetscScalar Ar_a_p    ;
  46   PetscScalar Ar_ala_n  ;
  47   PetscScalar Ar_ala_p  ;
  48   PetscScalar T300      ;
  49   // parameters for high field modification
  50   PetscScalar E0N       ;
  51   PetscScalar E0P       ;
  52   void Mob_Analytic_Init()
  53   {
  54     //Source: data base of DESSIS
  55     Ar_mumin_n  = 2.2600e+04*cm*cm/V/s;
  56     Ar_mumin_p  = 2.5000e+02*cm*cm/V/s;
  57     Ar_alm_n    = -1.5000e+00;
  58     Ar_alm_p    = -1.5000e+00;
  59     Ar_mud_n    = 0.0000e+00*cm*cm/V/s;
  60     Ar_mud_p    = 0.0000e+00*cm*cm/V/s;
  61     Ar_ald_n    = 0.0000e+00;
  62     Ar_ald_p    = 0.0000e+00;
  63     Ar_N0_n     = 1.0000e+17*pow(cm,-3);
  64     Ar_N0_p     = 1.0000e+17*pow(cm,-3);
  65     Ar_alN_n    = 0.0000e+00;
  66     Ar_alN_p    = 0.0000e+00;
  67     Ar_a_n      = 0.0000e+00;
  68     Ar_a_p      = 0.0000e+00;
  69     Ar_ala_n    = 0.0000e+00;
  70     Ar_ala_p    = 0.0000e+00;
  71     T300        = 300*K;
  72     E0N         = 4.0000e+03*V/cm;
  73     E0P         = 4.0000e+03*V/cm;
  74   }
  75
  76   //---------------------------------------------------------------------------
  77   // Electron low field mobility
  78   PetscScalar ElecMobLowField(const PetscScalar &Tl) const
  79   {
  80     return Ar_mumin_n*pow(Tl/T300,Ar_alm_n);
  81   }
  82   AutoDScalar ElecMobLowField(const AutoDScalar &Tl) const
  83   {
  84     return Ar_mumin_n*pow(Tl/T300,Ar_alm_n);
  85   }
  86
  87   //---------------------------------------------------------------------------
  88   // Hole low field mobility
  89   PetscScalar HoleMobLowField(const PetscScalar &Tl) const
  90   {
  91     return Ar_mumin_p*pow(Tl/T300,Ar_alm_p);
  92   }
  93   AutoDScalar HoleMobLowField(const AutoDScalar &Tl) const
  94   {
  95     return Ar_mumin_p*pow(Tl/T300,Ar_alm_p);
  96   }
  97
  98
  99 public:
 100   //---------------------------------------------------------------------------
 101   // Electron mobility
 102   PetscScalar ElecMob(const PetscScalar &p, const PetscScalar &n, const PetscScalar &Tl,
 103                       const PetscScalar &Ep, const PetscScalar &Et, const PetscScalar &Tn) const
 104   {
 105     PetscScalar vsat = 1.0000e+07*cm/s;
 106     PetscScalar mu0  = ElecMobLowField(Tl);
 107     PetscScalar E = Ep>0 ? Ep : 0 ;
 108     return (mu0+vsat*pow(E,3)/pow(E0N,4))/(1+pow(E/E0N,4));
 109   }
 110   AutoDScalar ElecMob(const AutoDScalar &p, const AutoDScalar &n, const AutoDScalar &Tl,
 111                       const AutoDScalar &Ep, const AutoDScalar &Et, const AutoDScalar &Tn) const
 112   {
 113     PetscScalar vsat = 1.0000e+07*cm/s;
 114     AutoDScalar mu0  = ElecMobLowField(Tl);
 115     AutoDScalar E = fmax(Ep, 0.0) ;
 116     return (mu0+vsat*pow(E,3)/pow(E0N,4))/(1+pow(E/E0N,4));
 117   }
 118
 119
 120   //---------------------------------------------------------------------------
 121   // Hole mobility
 122   PetscScalar HoleMob (const PetscScalar &p, const PetscScalar &n, const PetscScalar &Tl,
 123                        const PetscScalar &Ep, const PetscScalar &Et, const PetscScalar &Tp) const
 124   {
 125     PetscScalar vsat = 1.0000e+07*cm/s;
 126     PetscScalar mu0  = HoleMobLowField(Tl);
 127     PetscScalar E = Ep>0 ? Ep : 0 ;
 128     return (mu0+vsat*pow(E,3)/pow(E0P,4))/(1+pow(E/E0P,4));
 129   }
 130   AutoDScalar HoleMob(const AutoDScalar &p, const AutoDScalar &n, const AutoDScalar &Tl,
 131                       const AutoDScalar &Ep, const AutoDScalar &Et, const AutoDScalar &Tp) const
 132   {
 133     PetscScalar vsat = 1.0000e+07*cm/s;
 134     AutoDScalar mu0  = HoleMobLowField(Tl);
 135     AutoDScalar E = fmax(Ep, 0.0) ;
 136     return (mu0+vsat*pow(E,3)/pow(E0P,4))/(1+pow(E/E0P,4));
 137   }
 138
 139 // constructor and destructor
 140 public:
 141   GSS_Mob_Analytic(const PMIS_Environment &env):PMIS_Mobility(env)
 142   {
 143     Mob_Analytic_Init();
 144   }
 145
 146
 147   ~GSS_Mob_Analytic()
 148   {}
 149
 150 }
 151 ;
 152
 153
 154 /*---------------------------------------------------------------
 155  *  the interface function called by material databse controller
 156  *  use Analytic model as default mobility model
 157  */
 158 extern "C"
 159 {
 160   PMIS_Mobility* PMIS_InAs_Mob_Default (const PMIS_Environment& env)
 161   {
 162     return new GSS_Mob_Analytic(env);
 163   }
 164 }
 165 /* alias */
 166 extern "C"
 167 {
 168   PMIS_Mobility* PMIS_InAs_Mob_Analytic (const PMIS_Environment& env)
 169   {
 170     return new GSS_Mob_Analytic(env);
 171   }
 172 }