Function usefielddependent p(indEl, matind, Ex, Ey, T, xp, yp)
出自 DDCC TCAD TOOL Manual
Function usefielddependent_n(indEl, matind ,Ex,Ey,T,xp,yp) is activated by the command $usefieldmufunc. This function is similar to command $useemunfunc, $useemupfunc. But this function provide more parameters for use to assign in the input file. Therefore, this function can be continuous expanded to many different mobility models.
Here
Ex is the electric field in x direction Ey is the electric field in y direction T is the element's temperature matind is which region assign in input file the element's belongs to indEl is the element's index number
function usefielddependent_p(indEl, matind, Ex, Ey, T, xp, yp) use global2Dextra3 use nrtype use global2D, only : KB implicit none real(dp) :: usefielddependent_p integer(i4b),intent(in) :: indEl, matind integer(i4b) :: i,j,k real(dp),intent(in) :: Ex, Ey ,T ,xp,yp real(dp) :: mu, E, muconst if(munpfunctype(matind)==1) then if(Ey<0) then E=0 else E=Ey end if !E=abs(Ey) if(munpfuncpara(4,matind)*sqrt(E) < 50.0_dp) then mu= munpfuncpara(3,matind)*exp(munpfuncpara(4,matind)*sqrt(E)) else mu= munpfuncpara(3,matind)*exp(50.0_dp) end if usefielddependent_p=mu elseif(munpfunctype(matind)==11) then if(Ey>0) then E=0 else E=abs(Ey) end if !E=abs(Ey) if(munpfuncpara(4,matind)*sqrt(E) < 50.0_dp) then mu= munpfuncpara(3,matind)*exp(munpfuncpara(4,matind)*sqrt(E)) else mu= munpfuncpara(3,matind)*exp(50.0_dp) end if usefielddependent_p=mu elseif(munpfunctype(matind)==2) then if(Ex<0) then E=0 else E=Ex end if !E=abs(Ey) if(munpfuncpara(4,matind)*sqrt(E) < 50.0_dp) then mu= munpfuncpara(3,matind)*exp(munpfuncpara(4,matind)*sqrt(E)) else mu= munpfuncpara(3,matind)*exp(50.0_dp) end if usefielddependent_p=mu elseif(munpfunctype(matind)==21) then if(Ex>0) then E=0 else E=abs(Ex) end if !E=abs(Ey) if(munpfuncpara(4,matind)*sqrt(E) < 50.0_dp) then mu= munpfuncpara(3,matind)*exp(munpfuncpara(4,matind)*sqrt(E)) else mu= munpfuncpara(3,matind)*exp(50.0_dp) end if usefielddependent_p=mu end if !stop end function