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problem with running multi quantum well in atlas silvaco

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niloofar

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hi every body

i am simulating multi quantum well structure by atlas and the sizes are about Angstrom but my simulation cant show wavefunction in this structure
and when i change the sizes to nanometer it becomes better!!!

Also the statement SOLVE VCATHODE dont work and answers are the same az simulation with only SOLVE INIT !!!!

I really need help, would you please help me?

it is my infile:

go atlas

MESH AUTO
X.MESH LOCATION=0.0 SPACING=0.1
X.MESH LOCATION=1.0 SPACING=0.1
region num=1 bottom material=InAlAs thick=2.0e-3 ny=40 x.comp=0.52

region num=2 bottom material=InGaAs thick=1.4e-3 ny=29 x.comp=0.53 qwell well.cnbs=5

region num=3 bottom material=InAlAs thick=.75e-3 ny=15 x.comp=0.52

region num=4 bottom material=InGaAs thick=3.4e-3 ny=74 x.comp=0.53 qwell well.cnbs=5

region num=5 bottom material=InAlAs thick=0.4e-3 ny=9 x.comp=0.52

region num=6 bottom material=InGaAs thick=3.0e-3 ny=60 x.comp=0.53 qwell well.cnbs=5

region num=7 bottom material=InAlAs thick=1.4e-3 ny=24 x.comp=0.52

region num=8 bottom material=InGaAs thick=1.4e-3 ny=29 x.comp=0.53 qwell well.cnbs=5

region num=9 bottom material=InAlAs thick=.5e-3 ny=11 x.comp=0.52

region num=10 bottom material=InGaAs thick=1.4e-3 ny=34 x.comp=0.53 qwell well.cnbs=5

region num=11 bottom material=InAlAs thick=.5e-3 ny=11 x.comp=0.52

region num=12 bottom material=InGaAs thick=1.4e-3 ny=34 x.comp=0.53 qwell well.cnbs=5

region num=13 bottom material=InAlAs thick=.6e-3 ny=12 x.comp=0.52

region num=14 bottom material=InGaAs thick=1.7e-3 ny=37 x.comp=0.53 qwell well.cnbs=5

region num=15 bottom material=InAlAs thick=.7e-3 ny=17 x.comp=0.52

region num=16 bottom material=InGaAs thick=2.1e-3 ny=41 x.comp=0.53 qwell well.cnbs=5

elec num=1 name=cathode top
elec num=2 name=anode bottom

dop region=10 unif conc=2.5e16 n.type
dop region=11 unif conc=2.5e16 n.type
dop region=12 unif conc=2.5e16 n.type

model schrodinger.n eigens=3 fixed.fermi ^calc.fermi fermi new.eig num.direct=1 qminconc=1.0e13 srh incomplete


methode carrier=0


output con.band val.band band.param eigens=3

solve init
solve prev

save outf=lefnew.str
solve vcathode=0 vanode=0.25


tonyplot lefnew.str
quit
 

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