GaN Models Source file (2D) - full deck

The "DevicePacakge" command initializes a device simulation

DevicePackage

Constants used throughout device equations

set k 1.38066e-23
set q 1.60218e-19
set kev 8.617e-5
set Vt ($k*Temp/$q)
set eps0 8.854e-14
set kev 8.617e-5
set VtRoom [expr $k*300.0/$q]
set hbar 1.054571628e−34
set egan 7.88e-13
set Me 9.1e-31
set tau 1e-8

Parameter database values for materials used in GaN device structure begins here.

#paramaters for gas 
pdbSetString gas YoungsModulus 1e-7
pdbSetString gas PoissonRatio 0.99

GaN and AlGaN stiffness values with lattice temperature feedback

#Set Youngs Modulus and Poissons Ratio(for WZ crystal 0001 plane)
pdbSetString GaN YoungsModulus (3.9e12-0.16e10*(Temp-300.0))
pdbSetString GaN PoissonRatio 0.352

#Set Youngs Modulus and Poissons Ratio(approximation from Nanoindentation in AlGaN paper, Caceres '99)
pdbSetString AlGaN YoungsModulus (3.9e12+(5.555e11*AlN_Ratio)-0.16e10*(Temp-300.0))
pdbSetString AlGaN PoissonRatio 0.352

Silicon Nitride stiffness values

#Set Youngs Modulus and Poissons Ratio
pdbSetString Nitride YoungsModulus 2.0e12
pdbSetString Nitride PoissonRatio 0.24

Oxide phase stiffness values

#Set Youngs Modulus and Poissons Ratio
pdbSetString OxPhase YoungsModulus 3.9e12
pdbSetString OxPhase PoissonRatio 0.352

Material interface continuity stiffness values

#Set Youngs Modulus and Poissons Ratio
pdbSetString AlGaN_GaN YoungsModulus 2.0e12
pdbSetString AlGaN_GaN PoissonRatio 0.24

#Set Youngs Modulus and Poissons Ratio
pdbSetString AlGaN_OxPhase YoungsModulus 3.9e12
pdbSetString AlGaN_OxPhase PoissonRatio 0.352

#Set Youngs Modulus and Poissons Ratio
pdbSetString Metal_Nitride YoungsModulus 3.9e12
pdbSetString Metal_Nitride PoissonRatio 0.352

#Set Youngs Modulus and Poissons Ratio
pdbSetString Metal_OxPhase YoungsModulus 3.9e12
pdbSetString Metal_OxPhase PoissonRatio 0.352

#Set Youngs Modulus and Poissons Ratio
pdbSetString Nitride_OxPhase YoungsModulus 3.9e12
pdbSetString Nitride_OxPhase PoissonRatio 0.352

Gate Metal stiffness values

#Set Youngs Modulus and Poissons Ratio
pdbSetString Metal YoungsModulus 3.9e12
pdbSetString Metal PoissonRatio 0.352

More material interface continuity stiffness values

#Set Youngs Modulus and Poissons Ratio
pdbSetString Gas_Metal YoungsModulus 3.9e12
pdbSetString Gas_Metal PoissonRatio 0.352

#Set Youngs Modulus and Poissons Ratio
pdbSetString Gas_Nitride YoungsModulus 3.9e12
pdbSetString Gas_Nitride PoissonRatio 0.352