半导体器件仿真 Sentaurus TCAD PN结交流小信号特性仿真，

问题遇到的现象和发生背景

solve部分不会写

问题相关代码，请勿粘贴截图

File{
*input file:
Grid="PN_msh.tdr"

Parameter="models.par"

*output files
Plot = "PN_IVgs.tdr"
Current="PN.IVgs.plt"
Output="PN_IVgs.log"
}

Electrode{
{Name="cathode" Voltage=0.0}
{Name="anode"Voltage=1.0}

}

Physics {
AreaFactor=1
Mobility(ConstantMobility)
EffectiveIntrinsicDensity( BandGapNarrowing(OldSlotboom))
}

Plot {
ConductionBand ValenceBand
eDensity hDensity eCurrent hCurrent
Potential SpaceCharge ElectricField
eMobility hMobility eVelocity hVelocity
Doping DonorConcentration AcceptorConcentration
}

Math {
Extrapolate
RelErrControl
Notdamped=50
Iterations=30
}

System {

PN pn(anode=a cathode=c )
Vsource_pset va ( a 0 ){ dc = 0 }
Vsource_pset vc ( c 0 ){ dc = 0 }

}

Solve{
NewCurrentFile="init"
Coupled(Iterations=100){ Poisson }
Coupled{ Poisson Electron Hole }

Quasistationary (
InitialStep=0.1 Increment=1.3
MaxStep=0.5 Minstep=1.e-5
Goal { Parameter=anode Voltage=-3}
)
{ Coupled { Poisson Electron Hole } }

NewCurrentFile=""
Quasistationary (
InitialStep=0.01 Increment=1.3
MaxStep=0.05 Minstep=1.e-5
Goal { Parameter=anode Voltage=3}
)
{ ACCoupled (
StartFrequency=1e6 EndFrequency=1e6 NumberOfPoints=1 Decade
Node(a c) Exclude(va vc)
ACCompute (Time = (Range= (0 1) Intervals = 20))
){ Poisson Electron Hole }
}
}

运行结果及报错内容

Parsing "/usr/synopsys/H_2013.03-SP2/tcad/current/lib/sdevice-21.0.9/MaterialDB/Molefraction.txt"
Tue Apr 5 13:04:57 2022: checked out 1 Dessis license(s)
Tue Apr 5 13:04:57 2022: checked out 1 sdevice license(s)
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_sRL.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_pGC.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_SRL1.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_vsource2.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_vsource.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/bs_psource.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_isource.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_isource2.ccf
Parsing circuit file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/scm/MOS_harness.ccf
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/scm/MOS_harness.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_isource2.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_isource.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/bs_psource.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_vsource.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_vsource2.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_SRL1.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_pGC.so.amd64
Loading shared object file /usr/synopsys/H_2013.03-SP2/tcad/current/amd64/lib/sdevice/sd_hb_sRL.so.amd64

Unknown device 'PN' at line 44 !
主要是不知道solve该怎么写，以及怎么衔接其他部分

我的解答思路和尝试过的方法

我想要达到的结果

在不同偏压下PN结小信号交流特性 IV特性，帮忙指点一二。