1 function mob = Ufielddepmob(imesh,u0,F,vsat,b)
4 % mob = Ufielddepmob(imesh,u0,F,vsat,b)
5 % Computes field dependent mobility
9 % SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
10 % -------------------------------------------------------------------
11 % Copyright (C) 2004-2006 Carlo de Falco
15 % SECS2D is free software; you can redistribute it and/or modify
16 % it under the terms of the GNU General Public License as published by
17 % the Free Software Foundation; either version 2 of the License, or
18 % (at your option) any later version.
20 % SECS2D is distributed in the hope that it will be useful,
21 % but WITHOUT ANY WARRANTY; without even the implied warranty of
22 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 % GNU General Public License for more details.
25 % You should have received a copy of the GNU General Public License
26 % along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
30 [Ex,Ey]=Updegrad(imesh,F);
33 ef = sqrt(Ex.^2+Ey.^2);
35 if Ucolumns(ef)>Urows(ef)
38 if Ucolumns(u0)>Urows(u0)
42 mob = u0 ./ (1+(u0 .* ef ./ vsat).^b).^(1/b);