The document describes a simulation of an NMOS transistor. It defines the mesh, regions, doping concentrations, materials, and electrical contacts. Initial results are plotted including potential, electric field, and carrier concentrations to analyze the transistor behavior. The gate voltage is then swept to model transistor operation and output current-voltage characteristics.
5. 130... plot.1d h a.y=0 b.y=0.07 a.x=0 b.x=0 ascii outf=pdr512.h_1dy
131... plot.1d j.electr a.y=0 b.y=0.07 a.x=0 b.x=0 ascii outf=pdr512.je_1dy
132... plot.1d j.hole a.y=0 b.y=0.07 a.x=0 b.x=0 ascii outf=pdr512.jh_1dy
133... END
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MOSFET - NMOS
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Mesh statistics :
Total grid points = 2438
Total no. of elements = 4680
Min grid spacing (um) = 1.6355E-05
Max grid spacing (um) = 2.1529E-02 (r= 1.3163E+03)
Obtuse elements = 0 ( 0.0%)
** Warning in line # 33
Electrode # 1 contacts both sides of a junction or semi/ins boundary
** Warning in line # 33
Electrode # 2 contacts both sides of a junction or semi/ins boundary
3D plot written to pdr512.doping
Function # 1: Doping
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
6. Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
Material Definitions
Index Name Regions
1 silicon 1,2,3,4
2 sio2 5,6,7
Constants :
Boltzmanns k = 8.61700E-05
charge = 1.60200E-19
permittivity = 8.85400E-14
electron mass= 9.10950E-31
Ambient temperature = 300.000
Thermal voltage = 0.025851
Material data
num r-perm Egap Affinity Ec offset Bulk qf k-therm Gen con
1 11.80 1.1200E+00 4.1700E+00 0.0000E+00 0.0000E+00 1.4500E+00
4.0000E+13
2 3.90 9.0000E+00 9.0000E-01 -3.2700E+00 0.0000E+00 2.5000E-01 0.0000E+00
Semiconductor data
num stats ni An** Ap** Nc Nv
1 Boltz 9.963E+09 1.100E+02 3.000E+01 3.200E+19 2.030E+19
num gcb edb gcv eab w2d H-alphn
H-alphp
1 2.000E+00 5.000E-02 4.000E+00 4.500E-02 1.000E-03 3.000E-05
7. 2.000E-07
Model flags :
Incomp. ionization = F
Band-gap narrowing = F
SRH recombination =F
Conc-dep lifetime =F
Auger recombination = F
Deep level traps =F
Radiative recomb =F
Impact ionization =F
Band-to-band tunnel = F
Trap-assist tunnel =F
Stimulated emission = F
Carrier-carr. scat. = F
Neutral imp. scat. = F
Ion-impurity scat. = T
Field dep. mobil =T
Gate fld dep mobil = T
Field dep. diff =F
Thermoelectric curr = T
ET ebal formulation = F
Model Types:
mat # II-scat CC-scat Fld mob Vsat Gate mob
1 n Analytic Dorkel Caughey Exponent SGS
p Analytic Dorkel Caughey Power SGS
mat # D(E) Energy Ce(T) BGN
8. 1 n Lincut Const. P Slotboom
p Lincut Const. P Slotboom
Driving forces :
Mobility, parallel field = qfb
Mobility, gate field = exj
Diffusivity = qfb
Impact ionization = eoj
Default low-field mobilities/relax-times, vsat, w-kappa
mat # mobl0 tauw vsat(T0) kappa
1 n 1390. 2.0000E-13 1.0349E+07 1.500
p 470.0 2.0000E-13 8.3700E+06 1.500
Velocity saturation coefficients
mat # coef 1 coef 2 coef 3 coef 4 coef 5
1 n 2.400E+07 0.800 0.500 0.00 0.00
p 8.370E+06 0.800 -0.520 0.00 0.00
Lattice scat. mobility coefficients
mat # coef 1 coef 2 coef 3 coef 4 coef 5
1 n 1.390E+03 -2.30 0.00 0.00 0.00
p 470. -2.20 0.00 0.00 0.00
Ion-impurity mobility coefficients
mat # coef 1 coef 2 coef 3 coef 4 coef 5
1 n 55.2 1.072E+17 0.733 -2.55 -0.570
p 49.7 1.606E+17 0.700 -2.55 -0.570
Field mobility coefficients
9. mat # coef 1 coef 2 coef 3 coef 4 coef 5
1 n 2.00 0.00 0.00 0.00 0.00
p 1.00 0.00 0.00 0.00 0.00
Field mobility coefficients (cont.)
mat # coef 6 coef 7 coef 8 coef 9 coef 10
1 n 0.00 0.00 0.00 0.00 0.00
p 0.00 0.00 0.00 0.00 0.00
Gate mobility coefficients
mat # coef 1 coef 2 coef 3 coef 4 coef 5
1 n 4.750E+07 1.740E+05 0.125 5.820E+14 0.00
p 9.930E+06 8.840E+05 3.170E-02 2.050E+14 0.00
Gate mobility coefficients (cont.)
mat # coef 6 coef 7 coef 8 coef 9 coef 10
1 n 0.00 0.00 0.00 0.00 0.00
p 0.00 0.00 0.00 0.00 0.00
Energy relaxation coefficients
mat # coef 1 coef 2 coef 3 coef 4 coef 5
1 n 1.00 0.00 0.00 0.00 0.00
p 1.00 0.00 0.00 0.00 0.00
Energy relaxation coefficients (cont.)
mat # coef 6 coef 7 coef 8 coef 9 coef 10
1 n 0.00 0.00 0.00 0.00 0.00
p 0.00 0.00 0.00 0.00 0.00
Misc energy trans coefficients
11. 1 5* 1.4382E-02 U( 4)
1 5* 4.5834E-08 R( 1)
1 6* 2.0050E-05 U( 4)
1 6* 1.5706E-13 R( 1)
1 7* 9.3140E-11 U( 4)
1 7* 1.7620E-15 R( 1)
1 0 9.0000E-01 R( 0)
1 1 5.4840E-15 U( 1)
1 1 5.0528E-01 R( 1)
2 0 4.4348E-14 R( 0)
2 1 4.0255E-15 U( 1)
2 1 4.2979E-14 R( 1)
2 0 9.0839E-01 R( 0)
2 1 4.1710E-15 U( 1)
2 1 3.6780E-01 R( 1)
1 0 1.0307E-13 3.8217E-15 R( 0)
1 1 2.2632E-15 2.1717E-15 U( 1)
1 1 7.5139E-14 7.9753E-14 R( 1)
Electrode Voltage Electron Current Hole Current Conduction Current
(Volts) (Amps) (Amps) (Amps)
1 0.0000 -2.48510E-16 0.00000E+00 -2.48510E-16
2 0.0000 1.05670E-15 0.00000E+00 1.05670E-15
3 0.0000 0.00000E+00 0.00000E+00 0.00000E+00
4 0.0000 -9.44081E-33 0.00000E+00 -9.44081E-33
Electrode Flux Displacement Current Total Current
(Coul) (Amps) (Amps)
1 -8.32847E-17 0.00000E+00 -2.48510E-16
2 -1.16057E-16 0.00000E+00 1.05670E-15
3 3.26245E-16 0.00000E+00 0.00000E+00
4 -2.72337E-16 0.00000E+00 -9.44081E-33
Convergence criterion completely met
Total cpu time for Newton equation assembly = 0.5667
Total cpu time for Newton linear solves = 0.9000 ( 0.9000)
12. Total cpu time for bias point = 1.4667
Total cpu time = 1.7667
Solution written to pdr512.initsol
3D plot written to pdr512.equ
Function # 1: Potential
Function # 2: Electron density
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
3D plot written to pdr512.qfn_ini
Function # 1: Electron qf level
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
3D plot written to pdr512.qfp_ini
Function # 1: Hole qf level
13. Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
3D plot written to pdr512.po_ini
Function # 1: Potential
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
3D plot written to pdr512.do_ini
Function # 1: Doping
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
3D plot written to pdr512.el_ini
14. Function # 1: Electron density
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
3D plot written to pdr512.hh_ini
Function # 1: Hole density
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
3D plot written to pdr512.e_ini
Function # 1: Electric field
Region = 1 silicon ie1,ie2 = 1 936
Region = 2 silicon ie1,ie2 = 937 1804
Region = 3 silicon ie1,ie2 = 1805 2734
Region = 4 silicon ie1,ie2 = 2735 4160
Region = 5 sio2 ie1,ie2 = 4161 4390
Region = 6 sio2 ie1,ie2 = 4391 4530
Region = 7 sio2 ie1,ie2 = 4531 4680
18. 3 3.17020E-16 0.00000E+00 0.00000E+00
4 -2.79927E-16 0.00000E+00 -2.88043E-18
Convergence criterion completely met
Total cpu time for Newton equation assembly = 0.8333
Total cpu time for Newton linear solves = 1.5667 ( 1.5667)
Total cpu time for bias point = 2.4667
Total cpu time = 6.1667
Solution for bias:
V1 = 0.0000000E+00 V2 = 5.0000000E-02
V3 = 0.0000000E+00 V4 = 0.0000000E+00
Previous solution used as initial guess
o-itr i-itr psi-error n-error
1 0 4.5580E-14 R( 0)
1 1 2.0989E-15 U( 1)
1 1 4.3451E-14 R( 1)
1 0 2.3393E-06 R( 0)
1 1 9.2516E-08 U( 1)
1 1 1.5212E-07 R( 1)
2 0 4.7330E-14 R( 0)
2 1 2.4810E-15 U( 1)
2 1 4.7114E-14 R( 1)
2 0 3.0448E-07 R( 0)
2 1 1.3192E-07 U( 1)
2 1 1.5015E-07 R( 1)
1 0 1.1293E-13 1.0678E-14 R( 0)
1 1 1.9754E-15 2.8687E-07 U( 1)
1 1 1.0832E-13 1.7046E-13 R( 1)
19. Electrode Voltage Electron Current Hole Current Conduction Current
(Volts) (Amps) (Amps) (Amps)
1 0.0000 -1.57556E-08 0.00000E+00 -1.57556E-08
2 0.0500 1.57556E-08 0.00000E+00 1.57556E-08
3 0.0000 0.00000E+00 0.00000E+00 0.00000E+00
4 0.0000 -2.88043E-18 0.00000E+00 -2.88043E-18
Electrode Flux Displacement Current Total Current
(Coul) (Amps) (Amps)
1 -8.32863E-17 0.00000E+00 -1.57556E-08
2 -1.13339E-16 0.00000E+00 1.57556E-08
3 3.17020E-16 0.00000E+00 0.00000E+00
4 -2.79927E-16 0.00000E+00 -2.88043E-18
Convergence criterion completely met
Total cpu time for Newton equation assembly = 0.4667
Total cpu time for Newton linear solves = 0.7000 ( 0.7000)
Total cpu time for bias point = 1.1667
Total cpu time = 7.3333
Solution written to pdr512.vdn0
Solution for bias:
V1 = 0.0000000E+00 V2 = 5.0000000E-02
V3 = 0.0000000E+00 V4 = 0.0000000E+00
Previous solution used as initial guess
o-itr i-itr psi-error n-error
1 0 4.5260E-14 R( 0)
1 1 2.3208E-15 U( 1)
1 1 4.5660E-14 R( 1)
1 0 2.3570E-06 R( 0)
20. 1 1 2.1712E-09 U( 1)
1 1 1.5204E-07 R( 1)
2 0 4.9414E-14 R( 0)
2 1 2.4337E-15 U( 1)
2 1 4.8391E-14 R( 1)
2 0 3.0388E-07 R( 0)
2 1 2.5656E-09 U( 1)
2 1 1.5016E-07 R( 1)
1 0 1.1580E-13 1.0679E-14 R( 0)
1 1 2.2919E-15 6.3629E-09 U( 1)
1 1 1.0740E-13 1.7044E-13 R( 1)
Electrode Voltage Electron Current Hole Current Conduction Current
(Volts) (Amps) (Amps) (Amps)
1 0.0000 -1.57556E-08 0.00000E+00 -1.57556E-08
2 0.0500 1.57556E-08 0.00000E+00 1.57556E-08
3 0.0000 0.00000E+00 0.00000E+00 0.00000E+00
4 0.0000 -2.88043E-18 0.00000E+00 -2.88043E-18
Electrode Flux Displacement Current Total Current
(Coul) (Amps) (Amps)
1 -8.32863E-17 0.00000E+00 -1.57556E-08
2 -1.13339E-16 0.00000E+00 1.57556E-08
3 3.17020E-16 0.00000E+00 0.00000E+00
4 -2.79927E-16 0.00000E+00 -2.88043E-18
Convergence criterion completely met
Total cpu time for Newton equation assembly = 0.5333
Total cpu time for Newton linear solves = 0.6333 ( 0.6333)
Total cpu time for bias point = 1.2000
Total cpu time = 8.6000
Solution for bias:
47. Electrode Voltage Electron Current Hole Current Conduction Current
(Volts) (Amps) (Amps) (Amps)
1 0.0000 -5.23574E-08 0.00000E+00 -5.23574E-08
2 1.0083 5.23574E-08 0.00000E+00 5.23574E-08
3 0.0000 0.00000E+00 0.00000E+00 0.00000E+00
4 0.0000 -3.54826E-18 0.00000E+00 -3.54826E-18
Electrode Flux Displacement Current Total Current
(Coul) (Amps) (Amps)
1 -8.33149E-17 0.00000E+00 -5.23574E-08
2 -5.96046E-17 0.00000E+00 5.23574E-08
3 1.49536E-16 0.00000E+00 0.00000E+00
4 -4.20736E-16 0.00000E+00 -3.54826E-18
Convergence criterion completely met
Total cpu time for Newton equation assembly = 2.1667
Total cpu time for Newton linear solves = 8.9667 ( 8.9667)
Total cpu time for bias point = 11.2333
Total cpu time = 79.9333
Solution for bias:
V1 = 0.0000000E+00 V2 = 1.1041667E+00
V3 = 0.0000000E+00 V4 = 0.0000000E+00
Previous solution used as initial guess
o-itr i-itr psi-error n-error
1 0 6.9942E-01 R( 0)
1 1 3.7071E+00 U( 1)
1 1 4.2400E-02 R( 1)
1 2* 5.5736E-01 U( 5)
1 2* 4.9134E-03 R( 1)
56. 1 3* 2.5336E-13 5.2023E-13 R( 1)
1 4* 8.8811E-14 1.3399E-07 U( 2)
1 4* 2.5666E-13 5.1985E-13 R( 1)
Electrode Voltage Electron Current Hole Current Conduction Current
(Volts) (Amps) (Amps) (Amps)
1 0.0000 -5.58464E-08 0.00000E+00 -5.58464E-08
2 1.0802 5.58464E-08 0.00000E+00 5.58464E-08
3 0.0000 0.00000E+00 0.00000E+00 0.00000E+00
4 0.0000 -3.56706E-18 0.00000E+00 -3.56706E-18
Electrode Flux Displacement Current Total Current
(Coul) (Amps) (Amps)
1 -8.33170E-17 0.00000E+00 -5.58464E-08
2 -5.55069E-17 0.00000E+00 5.58464E-08
3 1.37107E-16 0.00000E+00 0.00000E+00
4 -4.31147E-16 0.00000E+00 -3.56706E-18
Convergence criterion completely met
Total cpu time for Newton equation assembly = 0.9667
Total cpu time for Newton linear solves = 1.5000 ( 1.5000)
Total cpu time for bias point = 2.5000
Total cpu time = 120.8667
Solution for bias:
V1 = 0.0000000E+00 V2 = 1.1041667E+00
V3 = 0.0000000E+00 V4 = 0.0000000E+00
Previous solution used as initial guess
o-itr i-itr psi-error n-error
1 0 6.9787E-01 R( 0)