Silvaco 仿真报错

Jayoung9986

Silvaco 仿真JFET，器件结构建立好后运行输出特性曲线仿真，报错如图： *Invalid parameter specification* 请问是哪里有问题，转移特性曲线IdVg 仿真一切正常

.# Output characteristics_IdVd
go atlas

mesh infile=JFET.str

# model
models mos print

# contact
contact  name=gate workf=4.5

# method
method newton gummel itlimit=25 trap atrap=0.5 maxtrap=4 autonr nrcriterion=0.1 tol.time=5e-3 dt.min=1e-25 damped delta=0.5 damploop=10 dfactor=10.0 iccg lu1cri=3e3 lu2cri=3e2 maxinner=25

# IdVd curve
solve init
solve vgate=-90 vsource=0
log outf=JOut_90.log
solve name=drain vdrian=5 vstep=-1 vfinal=0

tonyplot JOut_90.log