Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / secs1d-0.0.8 / DDG / DDGphip2p.m

diff --git a/octave_packages/secs1d-0.0.8/DDG/DDGphip2p.m b/octave_packages/secs1d-0.0.8/DDG/DDGphip2p.m
new file mode 100644 (file)
index 0000000..730a65b
--- /dev/null
+++ b/octave_packages/secs1d-0.0.8/DDG/DDGphip2p.m
@@ -0,0 +1,39 @@
+function p = DDGphip2p (V,phip);
+
+% p = DDGphip2p (V,phip);
+%         computes the hole density using Maxwell-Boltzmann
+%         statistics.
+
+## This file is part of 
+##
+## SECS1D - A 1-D Drift--Diffusion Semiconductor Device Simulator
+## -------------------------------------------------------------------
+## Copyright (C) 2004-2007  Carlo de Falco
+##
+##
+##
+##  SECS1D 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.
+##
+##  SECS1D 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 SECS1D; If not, see <http://www.gnu.org/licenses/>.
+  
+  
+%  load constants
+
+
+pmin = 0;
+
+p = exp ((phip-V));
+p = p .* (p>pmin) + pmin * (p<=pmin);
+
+% Last Revision:
+% $Author: adb014 $
+% $Date: 2008-02-04 16:26:27 +0100 (man, 04 feb 2008) $