Material Class

class plask.material.Material

Base class for all materials.

Methods

A([T])

Get monomolecular recombination coefficient A (1/s).

B([T])

Get radiative recombination coefficient B (cm³/s).

C([T])

Get Auger recombination coefficient C (cm⁶/s).

CB([T, e, point])

Get conduction band level CB (eV).

Ce([T])

Get Auger recombination coefficient C (cm⁶/s) for electrons.

Ch([T])

Get Auger recombination coefficient C (cm⁶/s) for holes.

D([T])

Get ambipolar diffusion coefficient D (cm²/s).

Dso([T, e])

Get split-off energy Dso (eV).

EactA([T])

Get acceptor ionisation energy EactA (eV).

EactD([T])

Get donor ionisation energy EactD (eV).

Eg([T, e, point])

Get energy gap Eg (eV).

Eps(lam[, T, n])

Get anisotropic permittivity tensor ε(λ) (-).

Me([T, e, point])

Get electron effective mass Me (m₀).

Mh([T, e])

Get hole effective mass Mh (m₀).

Mhh([T, e])

Get heavy hole effective mass Mhh (m₀).

Mlh([T, e])

Get light hole effective mass Mlh (m₀).

Mso([T, e])

Get split-off mass Mso (m₀).

Na()

Get acceptor concentration Na (1/m³).

Nd()

Get donor concentration Nd (1/m³).

Nf([T])

Get free carrier concentration N (1/m³).

Ni([T])

Get intrinsic carrier concentration Ni (1/m³).

Nr(lam[, T, n])

Get complex refractive index Nr (-).

Psp([T])

Get Spontaneous polarization P (C/m²).

VB([T, e, point, hole])

Get valance band level VB (eV).

absp(lam[, T])

Get absorption coefficient alpha (1/cm).

ac([T])

Get hydrostatic deformation potential for the conduction band ac (eV).

av([T])

Get hydrostatic deformation potential for the valence band av (eV).

b([T])

Get shear deformation potential b (eV).

c11([T])

Get elastic constant c₁₁ (GPa).

c12([T])

Get elastic constant c₁₂ (GPa).

c13([T])

Get elastic constant c₁₃ (GPa).

c33([T])

Get elastic constant c₃₃ (GPa).

c44([T])

Get elastic constant c₄₄ (GPa).

chi([T, e, point])

Get electron affinity Chi (eV).

complete_composition(composition)

Fix incomplete material composition basing on pattern.

cond([T])

Get electrical conductivity Sigma (S/m).

cp([T])

Get specific heat at constant pressure (J/(kg K)).

d([T])

Get shear deformation potential d (eV).

dens([T])

Get density (kg/m³).

e13([T])

Get piezoelectric constant e₁₃ (C/m²).

e15([T])

Get piezoelectric constant e₁₅ (C/m²).

e33([T])

Get piezoelectric constant e₃₃ (C/m²).

eps([T])

Get dielectric constant ε (-).

lattC([T, x])

Get lattice constant (Å).

mob([T])

Get majority carriers mobility (cm²/Vs).

mobe([T])

Get electron mobility (cm²/Vs).

mobh([T])

Get hole mobility (cm²/Vs).

nr(lam[, T, n])

Get refractive index nr (-).

taue([T])

Get monomolecular electrons lifetime (ns).

tauh([T])

Get monomolecular holes lifetime (ns).

thermk([T, h])

Get thermal conductivity [W/(m K)].

y1()

Get Luttinger parameter γ₁ (-).

y2()

Get Luttinger parameter γ₂ (-).

y3()

Get Luttinger parameter γ₃ (-).

Attributes

alloy

base

Base material.

composition

Material composition.

condtype

Electrical conductivity type.

dopant

', possibly empty).

doping

Doping concentration.

kind

Material kind.

name

Material name (without composition and doping amounts).

name_without_dopant

' and part of name after it).

Descriptions

Method Details

Material.A(T=300.0)

Get monomolecular recombination coefficient A (1/s).

Parameters:

T (float) – Temperature (K).

Material.B(T=300.0)

Get radiative recombination coefficient B (cm³/s).

Parameters:

T (float) – Temperature (K).

Material.C(T=300.0)

Get Auger recombination coefficient C (cm⁶/s).

Parameters:

T (float) – Temperature (K).

Material.CB(T=300.0, e=0, point='*')

Get conduction band level CB (eV).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

  • point (char) – Point in the Brillouin zone (‘*’ means minimum bandgap).

Material.Ce(T=300.0)

Get Auger recombination coefficient C (cm⁶/s) for electrons.

Parameters:

T (float) – Temperature (K).

Material.Ch(T=300.0)

Get Auger recombination coefficient C (cm⁶/s) for holes.

Parameters:

T (float) – Temperature (K).

Material.D(T=300.0)

Get ambipolar diffusion coefficient D (cm²/s).

Parameters:

T (float) – Temperature (K).

Material.Dso(T=300.0, e=0)

Get split-off energy Dso (eV).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

Material.EactA(T=300.0)

Get acceptor ionisation energy EactA (eV).

Parameters:

T (float) – Temperature (K).

Material.EactD(T=300.0)

Get donor ionisation energy EactD (eV).

Parameters:

T (float) – Temperature (K).

Material.Eg(T=300.0, e=0, point='*')

Get energy gap Eg (eV).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

  • point (char) – Point in the Brillouin zone (‘*’ means minimum bandgap).

Material.Eps(lam, T=300.0, n=0.0)

Get anisotropic permittivity tensor ε(λ) (-).

Parameters:

  • lam (float) – Wavelength (nm).

  • T (float) – Temperature (K).

  • n (float) – Injected carriers concentration (1/cm³).

Warning

This parameter is used only by solvers that can consider anisotropic anisotropic permittivity tensor properly. It is strongly advised to also define Nr().

Material.Me(T=300.0, e=0, point='*')

Get electron effective mass Me (m₀).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

  • point (char) – Point in the Brillouin zone (‘*’ means minimum bandgap).

Material.Mh(T=300.0, e=0)

Get hole effective mass Mh (m₀).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

Material.Mhh(T=300.0, e=0)

Get heavy hole effective mass Mhh (m₀).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

Material.Mlh(T=300.0, e=0)

Get light hole effective mass Mlh (m₀).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

Material.Mso(T=300.0, e=0)

Get split-off mass Mso (m₀).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

Material.Na()

Get acceptor concentration Na (1/m³).

Args:-

Material.Nd()

Get donor concentration Nd (1/m³).

Args:-

Material.Nf(T=300.0)

Get free carrier concentration N (1/m³).

Parameters:

T (float) – Temperature (K).

Material.Ni(T=300.0)

Get intrinsic carrier concentration Ni (1/m³).

Parameters:

T (float) – Temperature (K).

Material.Nr(lam, T=300.0, n=0.0)

Get complex refractive index Nr (-).

Parameters:

  • lam (float) – Wavelength (nm).

  • T (float) – Temperature (K).

  • n (float) – Injected carriers concentration (1/cm³).

Material.Psp(T=300.0)

Get Spontaneous polarization P (C/m²).

Parameters:

T (float) – Temperature (K).

Material.VB(T=300.0, e=0, point='*', hole='H')

Get valance band level VB (eV).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

  • point (char) – Point in the Brillouin zone (‘*’ means minimum bandgap).

  • hole (char) – Hole type (‘H’ or ‘L’).

Material.absp(lam, T=300.0)

Get absorption coefficient alpha (1/cm).

Parameters:

  • lam (float) – Wavelength (nm).

  • T (float) – Temperature (K).

Material.ac(T=300.0)

Get hydrostatic deformation potential for the conduction band ac (eV).

Parameters:

T (float) – Temperature (K).

Material.av(T=300.0)

Get hydrostatic deformation potential for the valence band av (eV).

Parameters:

T (float) – Temperature (K).

Material.b(T=300.0)

Get shear deformation potential b (eV).

Parameters:

T (float) – Temperature (K).

Material.c11(T=300.0)

Get elastic constant c₁₁ (GPa).

Parameters:

T (float) – Temperature (K).

Material.c12(T=300.0)

Get elastic constant c₁₂ (GPa).

Parameters:

T (float) – Temperature (K).

Material.c13(T=300.0)

Get elastic constant c₁₃ (GPa).

Parameters:

T (float) – Temperature (K).

Material.c33(T=300.0)

Get elastic constant c₃₃ (GPa).

Parameters:

T (float) – Temperature (K).

Material.c44(T=300.0)

Get elastic constant c₄₄ (GPa).

Parameters:

T (float) – Temperature (K).

Material.chi(T=300.0, e=0, point='*')

Get electron affinity Chi (eV).

Parameters:

  • T (float) – Temperature (K).

  • e (float) – Lateral strain (-).

  • point (char) – Point in the Brillouin zone (‘*’ means minimum bandgap).

Material.complete_composition(composition)

Fix incomplete material composition basing on pattern.

Parameters:

composition (dict) – Dictionary with incomplete composition (i.e. the one missing some elements).

Returns:

Dictionary with completed composition.

Return type:

dict

Material.cond(T=300.0)

Get electrical conductivity Sigma (S/m).

Parameters:

T (float) – Temperature (K).

Material.cp(T=300.0)

Get specific heat at constant pressure (J/(kg K)).

Parameters:

T (float) – Temperature (K).

Material.d(T=300.0)

Get shear deformation potential d (eV).

Parameters:

T (float) – Temperature (K).

Material.dens(T=300.0)

Get density (kg/m³).

Parameters:

T (float) – Temperature (K).

Material.e13(T=300.0)

Get piezoelectric constant e₁₃ (C/m²).

Parameters:

T (float) – Temperature (K).

Material.e15(T=300.0)

Get piezoelectric constant e₁₅ (C/m²).

Parameters:

T (float) – Temperature (K).

Material.e33(T=300.0)

Get piezoelectric constant e₃₃ (C/m²).

Parameters:

T (float) – Temperature (K).

Material.eps(T=300.0)

Get dielectric constant ε (-).

Parameters:

T (float) – Temperature (K).

Material.lattC(T=300.0, x='a')

Get lattice constant (Å).

Parameters:

  • T (float) – Temperature (K).

  • x (char) – lattice parameter (-).

Material.mob(T=300.0)

Get majority carriers mobility (cm²/Vs).

Parameters:

T (float) – Temperature (K).

Material.mobe(T=300.0)

Get electron mobility (cm²/Vs).

Parameters:

T (float) – Temperature (K).

Material.mobh(T=300.0)

Get hole mobility (cm²/Vs).

Parameters:

T (float) – Temperature (K).

Material.nr(lam, T=300.0, n=0.0)

Get refractive index nr (-).

Parameters:

  • lam (float) – Wavelength (nm).

  • T (float) – Temperature (K).

  • n (float) – Injected carriers concentration (1/cm³).

Material.taue(T=300.0)

Get monomolecular electrons lifetime (ns).

Parameters:

T (float) – Temperature (K).

Material.tauh(T=300.0)

Get monomolecular holes lifetime (ns).

Parameters:

T (float) – Temperature (K).

Material.thermk(T=300.0, h=inf)

Get thermal conductivity [W/(m K)].

Parameters:

  • T (float) – Temperature (K).

  • h (float) – Layer thickness (µm) (-).

Material.y1()

Get Luttinger parameter γ₁ (-).

Material.y2()

Get Luttinger parameter γ₂ (-).

Material.y3()

Get Luttinger parameter γ₃ (-).

Attribute Details

Material.alloy = <property object>
Material.base = <property object>

Base material.

This a base material specified for Python and XPL custom materials.

Material.composition = <property object>

Material composition.

Material.condtype = <property object>

Electrical conductivity type.

Material.dopant = <property object>

‘, possibly empty).

Type:

Dopant material name (part of name after ‘

Material.doping = <property object>

Doping concentration.

Material.kind = <property object>

Material kind.

Material.name = <property object>

Material name (without composition and doping amounts).

Material.name_without_dopant = <property object>

‘ and part of name after it).

Type:

Material name without dopant (without ‘