I forgot to add...
When running Pisces in windows, yopu would normally enter the command line
pisces2 myinput.p2
then psices would output a whole lot of stuff in the coomand prompt window which will be lost by the end of the simulation.
To capture this stuff, enter the command as follows:
pisces2 myinput.p2 > tmp.txt
Nothing will appear in the command window but everything will be captured in the file tmp.txt which you can view with any text editor. For the capacitance measurements, the actual capacitances are not put in the outf=ac file but will apprear in the command window. If you capture everything to tmp.txt you will have all the results.
The last output to the windows will have been :
Ac analysis :
Ac voltage = 1.000000E+00
Frequency = 1.100000E+04 Hz
Electrode # 1
Electrode Conduction Current Displacement Current
(amps/micron) (amps/micron)
1 0.00000E+00 0.00000E+00 3.42495E-19 8.73996E-11
2 -4.74229E-19 -6.76463E-12 1.52460E-20 -1.45151E-18
3 5.78599E-17 -4.32588E-11 5.12848E-21 -4.57651E-13
4 1.38796E-16 -3.64566E-11 4.30420E-21 -4.61906E-13
Element Total Current Conductance Capacitance
(amps/micron) (siemens/micron) (farads/micron)
Y11 3.42495E-19 8.73996E-11 3.42495E-19 1.26455E-15
Y21 -4.58983E-19 -6.76463E-12 -4.58983E-19 -9.78749E-17
Y31 5.78650E-17 -4.37165E-11 5.78650E-17 -6.32517E-16
Y41 1.38800E-16 -3.69185E-11 1.38800E-16 -5.34160E-16
Absolute convergence criterion met for Poisson
Absolute convergence criterion met for continuity
Total cpu time for bias point = 0.59
Total cpu time = 0.89
Solution written to ac
---------- Post added at 21:50 ---------- Previous post was at 21:01 ----------
To get the classic CV plot (sweep -Vg to +Vg), use the following:
TITLE ... MOSFET 180nm CV
mesh infile=7grid2
contact num=1 n.poly
contact num=2 neutral
contact num=3 neutral
contact num=4 neutral
symb newton carriers=2 electrons
method 2nd Tauto autonr
solve init currents
log outf=ac.log
solve v1=0 v2=0 v3=0 v4=0
solve AC.**** freq=1.0E6 elect=1 vstep=-0.2 nsteps=9 VSS=0.01 outf=ac1
solve v1=0 v2=0 v3=0 v4=0
solve AC.**** freq=1.0E6 elect=1 vstep=0.2 nsteps=9 VSS=0.01 outf=ac2
end
run pisces2 0p18CV.p2 > tmp.txt
From tmp.txt extract the capacitances for electrode 1 into excel or something and plot vs Vg.