T-Gate, OFF state, Strain Contours & IV plot (2D) - full deck: Difference between revisions
Jump to navigation
Jump to search
(Created page with " DevicePackage pdbSetDouble Math iterLimit 800 pdbSetDouble Math rhsLimit 1.0e-15 pdbSetDouble Math updateLimit 1.0e-6 math device dim=2 col umf none scale source GaN_mode...") |
No edit summary |
||
Line 6: | Line 6: | ||
math device dim=2 col umf none scale | math device dim=2 col umf none scale | ||
source | source GaN_Models_Source_file_(2D) | ||
#source GaN_ETemp | #source GaN_ETemp | ||
Revision as of 20:28, 30 January 2014
DevicePackage
pdbSetDouble Math iterLimit 800 pdbSetDouble Math rhsLimit 1.0e-15 pdbSetDouble Math updateLimit 1.0e-6 math device dim=2 col umf none scale
source GaN_Models_Source_file_(2D) #source GaN_ETemp
mater add name=Metal mater add name=OxPhase mater add name=Nitride
#Set up solution for displacement solution name = displacement add solve dim continuous negative solution name = Temp add solve
math diffuse dim=2 umf none col !scale
pdbSetBoolean GaN displacement Negative 1 pdbSetBoolean ReflectLeft displacement Negative 1 pdbSetDouble GaN displacement Abs.Error 1.0e-8 pdbSetDouble ReflectLeft displacement Abs.Error 1.0e-8
pdbSetBoolean AlGaN displacement Negative 1 pdbSetBoolean ReflectLeft displacement Negative 1 pdbSetDouble AlGaN displacement Abs.Error 1.0e-8 pdbSetDouble ReflectLeft displacement Abs.Error 1.0e-8
pdbSetBoolean Nitride displacement Negative 1 pdbSetBoolean ReflectLeft displacement Negative 1 pdbSetDouble Nitride displacement Abs.Error 1.0e-8 pdbSetDouble ReflectLeft displacement Abs.Error 1.0e-8
pdbSetBoolean OxPhase displacement Negative 1 pdbSetBoolean ReflectLeft displacement Negative 1 pdbSetDouble OxPhase displacement Abs.Error 1.0e-8 pdbSetDouble ReflectLeft displacement Abs.Error 1.0e-8
pdbSetBoolean ReflectRight displacement Negative 1 pdbSetDouble ReflectRight displacement Abs.Error 1.0e-8
#Fix base pdbSetBoolean ReflectBottom displacement Fixed 1 pdbSetString ReflectBottom displacement Equation "displacement" #Fix sides pdbSetBoolean ReflectLeft displacement Fixed 1 pdbSetString ReflectLeft displacement Equation "displacement"
pdbSetBoolean ReflectRight displacement Fixed 1 pdbSetString ReflectRight displacement Equation "displacement"
pdbSetString GaN displacement Equation "elastic(displacement)" pdbSetString AlGaN displacement Equation "elastic(displacement)-BodyStrain(0.004)+IPZ(DevPsi)" #pdbSetString AlGaN displacement Equation "elastic(displacement)+BodyStrain(0.004) pdbSetString OxPhase displacement Equation "elastic(displacement)" pdbSetString Nitride displacement Equation "elastic(displacement)+BodyStrain(0.00005)"
#Structure definition (AlGaN is 25nm thick.It is below the critical thickness for relaxation ~65nm Ambacher) source TgateDimensions
line x loc=-0.2 spac=0.01 tag=Gwt line x loc=-0.1 spac=0.01 tag=Gwb line x loc=-0.005 spac=0.001 tag=Ox line x loc=0.0 spac=0.001 tag=AlGaNTop line x loc=$Althick spac=0.005 tag=AlGaNBottom line x loc=1.0 spac=0.1 tag=BBottom
line y loc=-1.0 spac=0.05 tag=Left line y loc=$Gtl spac=0.02 tag=sidewL line y loc=$Gbl spac=0.02 tag=sidenL line y loc=$Gbr spac=0.02 tag=sidenR line y loc=$Gtr spac=0.02 tag=sidewR line y loc=1.0 spac=0.05 tag=Right
#Bulk region GaN xlo=AlGaNBottom xhi=BBottom ylo=Left yhi=Right
#AlGaN under gate region AlGaN xlo=AlGaNTop xhi=AlGaNBottom ylo=Left yhi=Right #Metal alloy for T-gate region Metal xlo=Gwt xhi=Gwb ylo=sidewL yhi=sidewR region Metal xlo=Gwb xhi=Ox ylo=sidenL yhi=sidenR
#Nitride cap layer region Nitride xlo=Gwt xhi=Gwb ylo=Left yhi=sidewL region Nitride xlo=Gwt xhi=Gwb ylo=sidewR yhi=Right region Nitride xlo=Gwb xhi=Ox ylo=Left yhi=sidenL region Nitride xlo=Gwb xhi=Ox ylo=sidenR yhi=Right
#Created Oxide layer region OxPhase xlo=Ox xhi=AlGaNTop ylo=Left yhi=Right
init
#Contacts contact name=G Metal xlo=-0.195 xhi=-0.002 ylo=[expr {$Gtl-$buf}] yhi=[expr {$Gtr+$buf}] add depth=1.0 width=1.0 contact name=B GaN xlo=0.9 xhi=1.1 ylo=-1.0 yhi=1.0 add depth=1.0 width=1.0 contact name=S AlGaN ylo=-1.0 yhi=-0.9 xlo=-0.7 xhi=0.0005 add depth=1.0 width=1.0 contact name=D AlGaN ylo=0.9 yhi=1.0 xlo=-0.7 xhi=0.0005 add depth=1.0 width=1.0
contact name=G current=(Hole_AlGaN-Elec_AlGaN) voltage supply=0.0 contact name=B current=(Hole_GaN-Elec_GaN) voltage supply=0.0 contact name=D current=(Hole_GaN-Elec_GaN) voltage supply=0.0 contact name=S current=(Hole_GaN-Elec_GaN) voltage supply=0.0 #doping definition-will use method from pfmos_qf deck for simplicity #GaN Doping-from Dessis file from Heller-acceptor-p-type sel z=-6.5e16*Mater(GaN) name=GaN_Doping #AlGaN Doping-from Dessis file from Heller-he puts equivalent donor and acceptor doping in region to signify traps sel z=1e12 name=AlGaN_Doping #sel z=1e12*Mater(OxPhase) name=OxPhase_Doping #sel z=1e20*Mater(Metal)*(x>=-0.2)*(x<=-0.002)*(y>$Gtl)*(y<$Gtr) name=Metal_Doping sel z=1e20*(x>=-0.2)*(x<=-0.002)*(y>$Gtl)*(y<$Gtr) name=Metal_Doping #Source and Drain contact doping-from contact to 2DEG like Heller-just to make contacts ohmic sel z=(1e19*(y>0.75)+(y<=0.75)*1.0e19*exp(-(y-0.75)*(y-0.75)/(0.75*0.02*0.02)))*(exp(-(x*x)/(2.0*0.03*0.03)))*(x>=0.0) name=Drain_Doping sel z=(1e19*(y<-0.75)+(y>=-0.75)*1.0e19*exp(-(y+0.75)*(y+0.75)/(0.75*0.02*0.02)))*(exp(-(x*x)/(2.0*0.03*0.03)))*(x>=0.0) name=Source_Doping
#Total doping #sel z=GaN_Doping+AlGaN_Doping+Drain_Doping+Source_Doping+Metal_Doping+OxPhase_Doping name=Doping sel z=GaN_Doping+AlGaN_Doping+Drain_Doping+Source_Doping+Metal_Doping name=Doping sel z=0.26 name=AlN_Ratio
proc Plot {} { plot.2d bound plot.2d contact=G !cle plot.2d contact=B !cle plot.2d contact=S !cle plot.2d contact=D !cle plot.2d contact=F1 !cle plot.2d contact=F2 !cle } # proc Plotsmall {} { plot.2d bound min = {-2e-5 -4e-5} max = {1.5e-5 4e-5} plot.2d contact=G !cle } proc Plotasy {} { plot.2d bound min = {-2e-5 -6.5e-5} max = {1.5e-5 1.5e-5} plot.2d contact=G !cle }
Initialize
device init