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/cm³).

Nd()

Get donor concentration Nd (1/cm³).

Nf([T])

Get free carrier concentration N (1/cm³).

Ni([T])

Get intrinsic carrier concentration Ni (1/cm³).

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

None( (plask._material.Material)arg1) -> bool

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/cm³).

Args:-

Material.Nd()

Get donor concentration Nd (1/cm³).

Args:-

Material.Nf(T=300.0)

Get free carrier concentration N (1/cm³).

Parameters:

T (float) – Temperature (K).

Material.Ni(T=300.0)

Get intrinsic carrier concentration Ni (1/cm³).

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>

None( (plask._material.Material)arg1) -> bool

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 ‘