src/material/InN/InN_gen.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: InN
  23
  24 #include "PMI.h"
  25
  26 class GSS_InN_Avalanche : public PMIS_Avalanche
  27 {
  28 private:
  29
  30   PetscScalar a_n;
  31   PetscScalar a_p;
  32   PetscScalar b_n;
  33   PetscScalar b_p;
  34   PetscScalar hbarOmega;
  35   PetscScalar T300;
  36
  37   void  Avalanche_Init()
  38   {
  39     //Source: data base of DESSIS
  40     a_n = 2.9e+08/cm ;
  41     a_p = 1.3400e+08/cm ;
  42     b_n = 3.4e+07*V/cm ;
  43     b_p = 2.0300e+07*V/cm ;
  44     hbarOmega = 0.035*eV;
  45     T300 = 300*K;
  46   }
  47 public:
  48   //---------------------------------------------------------------------------
  49   // Electron Impact Ionization rate for DDM
  50   PetscScalar ElecGenRate (const PetscScalar &Tl,const PetscScalar &Ep,const PetscScalar &Eg) const
  51   {
  52     if (Ep < 1*V/cm)
  53     {
  54       return 0;
  55     }
  56     else
  57     {
  58       PetscScalar gamma = tanh(hbarOmega/(2*kb*T300)) / tanh(hbarOmega/(2*kb*Tl));
  59       return gamma*a_n*exp(-b_n*gamma/Ep);
  60     }
  61   }
  62   AutoDScalar ElecGenRate (const AutoDScalar &Tl,const AutoDScalar &Ep,const AutoDScalar &Eg) const
  63   {
  64     if (Ep < 1*V/cm)
  65     {
  66       return 0;
  67     }
  68     else
  69     {
  70       AutoDScalar gamma = tanh(hbarOmega/(2*kb*T300)) / tanh(hbarOmega/(2*kb*Tl));
  71       return gamma*a_n*exp(-b_n*gamma/Ep);
  72     }
  73   }
  74
  75   //---------------------------------------------------------------------------
  76   // Hole Impact Ionization rate for DDM
  77   PetscScalar HoleGenRate (const PetscScalar &Tl,const PetscScalar &Ep,const PetscScalar &Eg) const
  78   {
  79     if (Ep < 1*V/cm)
  80     {
  81       return 0;
  82     }
  83     else
  84     {
  85       PetscScalar gamma = tanh(hbarOmega/(2*kb*T300)) / tanh(hbarOmega/(2*kb*Tl));
  86       return gamma*a_p*exp(-b_p*gamma/Ep);
  87     }
  88   }
  89   AutoDScalar HoleGenRate (const AutoDScalar &Tl,const AutoDScalar &Ep,const AutoDScalar &Eg) const
  90   {
  91     if (Ep < 1*V/cm)
  92     {
  93       return 0;
  94     }
  95     else
  96     {
  97       AutoDScalar gamma = tanh(hbarOmega/(2*kb*T300)) / tanh(hbarOmega/(2*kb*Tl));
  98       return gamma*a_p*exp(-b_p*gamma/Ep);
  99     }
 100   }
 101
 102   //---------------------------------------------------------------------------
 103   // Electron Impact Ionization rate for EBM
 104   PetscScalar ElecGenRateEBM (const PetscScalar &Tn,const PetscScalar &Tl,const PetscScalar &Eg) const
 105   {
 106     return 0;
 107   }
 108   AutoDScalar ElecGenRateEBM (const AutoDScalar &Tn,const AutoDScalar &Tl,const AutoDScalar &Eg) const
 109   {
 110     return 0;
 111   }
 112
 113   //---------------------------------------------------------------------------
 114   // Hole Impact Ionization rate for EBM
 115   PetscScalar HoleGenRateEBM (const PetscScalar &Tp,const PetscScalar &Tl,const PetscScalar &Eg) const
 116   {
 117     return 0;
 118   }
 119   AutoDScalar HoleGenRateEBM (const AutoDScalar &Tp,const AutoDScalar &Tl,const AutoDScalar &Eg) const
 120   {
 121     return 0;
 122   }
 123
 124
 125 //----------------------------------------------------------------
 126 // constructor and destructor
 127 public:
 128   GSS_InN_Avalanche(const PMIS_Environment &env):PMIS_Avalanche(env)
 129   {
 130     Avalanche_Init();
 131   }
 132   ~GSS_InN_Avalanche()
 133   {
 134   }
 135
 136 }
 137 ;
 138
 139 extern "C"
 140 {
 141   PMIS_Avalanche* PMIS_InN_Avalanche_Default (const PMIS_Environment& env)
 142   {
 143     return new GSS_InN_Avalanche(env);
 144   }
 145 }