/usr/share/octave/packages/secs2d-0.0.8/ThDDGOX/ThDDGOXelectron_driftdiffusion.m is in octave-secs2d 0.0.8-5.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | function n=ThDDGOXelectron_driftdiffusion(mesh,Dnodes,n,pin,V,...
Tn,mobn0,mobn1,tn,tp,n0,p0)
%%
%% n=ThDDGOXelectron_driftdiffusion(mesh,Dnodes,n,pin,V,Tn,un0,un1,tn,tp,n0,p0)
%%
%% This file is part of
%%
%% SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
%% -------------------------------------------------------------------
%% Copyright (C) 2004-2006 Carlo de Falco
%%
%%
%%
%% SECS2D is free software; you can redistribute it and/or modify
%% it under the terms of the GNU General Public License as published by
%% the Free Software Foundation; either version 2 of the License, or
%% (at your option) any later version.
%%
%% SECS2D is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
%% GNU General Public License for more details.
%%
%% You should have received a copy of the GNU General Public License
%% along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
Nnodes = columns(mesh.p);
Nelements = columns(mesh.t);
Varnodes = setdiff(1:Nnodes,Dnodes);
alpha = mobn0;
gamma = mobn1;
eta = Tn;
beta = V-Tn;
Dn = Uscharfettergummel3(mesh,alpha,gamma,eta,beta);
denom = (tp*(n+sqrt(n0.*p0))+tn*(pin+sqrt(n0.*p0)));
MASS_LHS = Ucompmass2(mesh,pin./denom,ones(Nelements,1));
LHS = Dn+MASS_LHS;
RHS = Ucompconst (mesh,p0.*n0./denom,ones(Nelements,1));
n(Varnodes) = LHS(Varnodes,Varnodes) \(RHS(Varnodes) -...
LHS(Varnodes,Dnodes)*n(Dnodes));
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