High Electron Mobility Transistor (HEMT)-1

code:-

go atlas

mesh auto

#mesh space.mult=1

#X-Mesh--------------------------------------------------------------

x.mesh loc=0 spac=.1

x.mesh loc=9 spac=.1

#Y-Mesh-----------------------------------------------------------

y.mesh loc=0.0 spac=.25

y.mesh loc=0.5 spac=0.001

y.mesh loc=.525 spac=0.01

y.mesh loc=.6 spac=.01

y.mesh loc=.7 spac=.5

y.mesh loc=2.0 spac=.5

#region--------------------------------------------------------------

region num=1 x.min=0 x.max=9 y.min=0.5 y.max=0.525 mat=AlGaN x.comp=0.3

region num=2 x.min=0 x.max=9 y.min=0.525 y.max=2 mat=GaN

region num=3 x.min=0 x.max=9 y.min=0 y.max=0.5 mat=nitride

#Electrodes----------------------------------------------------------

electrode num=1 name=source x.min=8 x.max=9 y.min=0.525 y.max=0.6

electrode num=2 name=drain x.min=0 x.max=1 y.min=0.525 y.max=0.6

electrode num=3 name=gate x.min=3.5 x.max=5.5 y.min=0 y.max=0.5

#material Properties-----------------------------------------------

#model---------------------------------------------------------------

models srh bgn cvt print

mobility albrct.n

models polarization calc.strain polar.scale=0.8

#output parameter----------------------------------------------------

output band.par val.band con.band charge polar.charge

#contact-------------------------------------------------------------

contact name=gate workfun=5

contact name=source workfun=3.93

contact name=drain workfun=3.93

#method-------------------------------------------------------------

method newton trap maxtrap=10

log outfile=nw_des_i.log

#solve---------------------------------------------------------------

solve init

solve vdrain=1.0

solve name=gate vstep=-0.1 vfinal=-10

tonyplot nw_des_i.log

save outf=nw_des.str

tonyplot nw_des.str

quit

result:-