openbandparams.iii_v package¶

Subpackages¶

openbandparams.iii_v.zinc_blende package

Submodules¶

openbandparams.iii_v.binary module¶

class openbandparams.iii_v.binary.Binary[source]¶

Bases: openbandparams.iii_v.base_material.Base

classmethod Delta_SO(**kwargs)[source]¶: Returns the split-off energy, Delta_SO, in electron Volts.

classmethod Eg(**kwargs)[source]¶: Returns the bandgap, Eg, in electron Volts at a given temperature, T, in Kelvin (default: 300 K).

classmethod Eg_Gamma(**kwargs)[source]¶: Returns the Gamma-valley bandgap, Eg_Gamma, in electron Volts at a given temperature, T, in Kelvin (default: 300 K).

classmethod Eg_Gamma_0(**kwargs)[source]¶: Returns the Gamma-valley bandgap, Eg_Gamma, in electron Volts at 0 K.

classmethod Eg_L(**kwargs)[source]¶: Returns the L-valley bandgap, Eg_L, in electron Volts at a given temperature, T, in Kelvin (default: 300 K).

classmethod Eg_L_0(**kwargs)[source]¶: Returns the L-valley bandgap, Eg_L, in electron Volts at 0 K.

classmethod Eg_X(**kwargs)[source]¶: Returns the X-valley bandgap, Eg_X, in electron Volts at a given temperature, T, in Kelvin (default: 300 K).

classmethod Eg_X_0(**kwargs)[source]¶: Returns the X-valley bandgap, Eg_X, in electron Volts at 0 K.

classmethod Ep(**kwargs)[source]¶: Returns the Ep matrix element, in electron Volts.

classmethod F(**kwargs)[source]¶: Returns the F Kane parameter (unitless).

LaTeX = <bound class method Binary.LaTeX>[source]¶

classmethod Luttinger1(**kwargs)[source]¶: Returns the first Luttinger parameter (unitless).

classmethod Luttinger2(**kwargs)[source]¶: Returns the second Luttinger parameter (unitless).

classmethod Luttinger3(**kwargs)[source]¶: Returns the second Luttinger parameter (unitless).

classmethod VBO(**kwargs)[source]¶: Returns the valance band offset energy, VBO, in electron Volts relative to the InSb valance band maximum.

classmethod a(**kwargs)[source]¶: Returns the lattice parameter, a, in Angstroms at a given temperature, T, in Kelvin (default: 300 K).

classmethod a_300K(**kwargs)[source]¶: Returns the lattice parameter, a, in Angstroms at 300 K.

classmethod a_c(**kwargs)[source]¶: Returns the conduction band deformation potential, a_c, in electron Volts.

classmethod a_v(**kwargs)[source]¶: Returns the valance band deformation potential, a_v, in electron Volts.

classmethod alpha_Gamma(**kwargs)[source]¶: Returns the Gamma-valley alpha Varshni parameter, alpha_Gamma, in electron Volts per Kelvin.

classmethod alpha_L(**kwargs)[source]¶: Returns the L-valley alpha Varshni parameter, alpha_L, in electron Volts per Kelvin.

classmethod alpha_X(**kwargs)[source]¶: Returns the X-valley alpha Varshni parameter, alpha_X, in electron Volts per Kelvin.

classmethod b(**kwargs)[source]¶: Returns the b shear deformation potential, in electron Volts.

classmethod beta_Gamma(**kwargs)[source]¶: Returns the Gamma-valley beta Varshni parameter, beta_Gamma, in Kelvin.

classmethod beta_L(**kwargs)[source]¶: Returns the L-valley beta Varshni parameter, beta_L, in Kelvin.

classmethod beta_X(**kwargs)[source]¶: Returns the X-valley beta Varshni parameter, beta_X, in Kelvin.

classmethod c_11(**kwargs)[source]¶: Returns the c_11 elastic constant, in gigapascals.

classmethod c_12(**kwargs)[source]¶: Returns the c_12 elastic constant, in gigapascals.

classmethod c_44(**kwargs)[source]¶: Returns the c_44 elastic constant, in gigapascals.

classmethod d(**kwargs)[source]¶: Returns the d shear deformation potential, in electron Volts.

classmethod da_dT(**kwargs)[source]¶: Returns the thermal expansion coefficient, da_dT, of the lattice parameter, a, in Angstroms per Kelvin.

classmethod elementFraction(element)[source]¶: Returns the fractional concentration of element with respect to its sublattice. In a III-V binary, the fraction is either 1 if element is present, or 0 if it is not.

classmethod meff_SO(**kwargs)[source]¶: Returns the split-off band hole effective mass, meff_SO, in units of electron mass.

classmethod meff_e_Gamma(**kwargs)[source]¶: Returns the Gamma-valley electron effective mass, meff_e_Gamma, in units of electron mass.

classmethod meff_e_L_DOS(**kwargs)[source]¶: Returns the L-valley electron density of states effective mass, meff_e_L_DOS, in units of electron mass.

classmethod meff_e_L_long(**kwargs)[source]¶: Returns the L-valley electron effective mass in the longitudinal direction, meff_e_L_long, in units of electron mass.

classmethod meff_e_L_trans(**kwargs)[source]¶: Returns the L-valley electron effective mass in the transverse direction, meff_e_L_trans, in units of electron mass.

classmethod meff_e_X_DOS(**kwargs)[source]¶: Returns the X-valley electron density of states effective mass, meff_e_X_DOS, in units of electron mass.

classmethod meff_e_X_long(**kwargs)[source]¶: Returns the X-valley electron effective mass in the longitudinal direction, meff_e_X_long, in units of electron mass.

classmethod meff_e_X_trans(**kwargs)[source]¶: Returns the X-valley electron effective mass in the transverse direction, meff_e_X_trans, in units of electron mass.

class openbandparams.iii_v.binary.BinaryType[source]¶: Bases: openbandparams.base_material.BaseType

openbandparams.iii_v.quaternary module¶

class openbandparams.iii_v.quaternary.Quaternary[source]¶: Bases: openbandparams.iii_v.base_material.Base

class openbandparams.iii_v.quaternary.Quaternary1(**kwargs)[source]¶

Bases: openbandparams.iii_v.quaternary.Quaternary1or2

For alloys of the AB_{x}C_{y}D_{1-x-y} type [1], where A is the only Group III element. These require only three ternaries for interpolation.

[1] C. K. Williams, T. H. Glisson, J. R. Hauser, and M. A. Littlejohn, “Energy bandgap and lattice constant contours of iii-v quaternary alloys of the form Ax By Cz D or A Bx Cy Dz,” JEM, vol. 7, no. 5, pp. 639-646, Sep. 1978.

LaTeX = <bound class method Quaternary1.LaTeX>[source]¶

elementFraction = <bound class method Quaternary1.elementFraction>[source]¶

class openbandparams.iii_v.quaternary.Quaternary1or2(**kwargs)[source]¶

Bases: openbandparams.iii_v.quaternary.Quaternary

For alloys of the AB_{x}C_{y}D_{1-x-y} and A_{x}B_{y}C_{1-x-y}D types [1]. These require only three ternaries for interpolation.

[1] C. K. Williams, T. H. Glisson, J. R. Hauser, and M. A. Littlejohn, “Energy bandgap and lattice constant contours of iii-v quaternary alloys of the form Ax By Cz D or A Bx Cy Dz,” JEM, vol. 7, no. 5, pp. 639-646, Sep. 1978.

class openbandparams.iii_v.quaternary.Quaternary1or2Type[source]¶: Bases: openbandparams.base_material.BaseType

class openbandparams.iii_v.quaternary.Quaternary2(**kwargs)[source]¶

Bases: openbandparams.iii_v.quaternary.Quaternary1or2

For alloys of the A_{x}B_{y}C_{1-x-y}D type [1], where D is the only Group V element. These require only three ternaries for interpolation.

[1] C. K. Williams, T. H. Glisson, J. R. Hauser, and M. A. Littlejohn, “Energy bandgap and lattice constant contours of iii-v quaternary alloys of the form Ax By Cz D or A Bx Cy Dz,” JEM, vol. 7, no. 5, pp. 639-646, Sep. 1978.

LaTeX = <bound class method Quaternary2.LaTeX>[source]¶

elementFraction = <bound class method Quaternary2.elementFraction>[source]¶

class openbandparams.iii_v.quaternary.Quaternary3(**kwargs)[source]¶

Bases: openbandparams.iii_v.quaternary.Quaternary

For alloys of the A_{x}B_{1-x}C_{y}D_{1-y} type [1-2]. Where A and B are Group III elements, and C and D are Group V elements. These require four ternaries for interpolation.

[1] T. H. Glisson, J. R. Hauser, M. A. Littlejohn, and C. K. Williams, “Energy bandgap and lattice constant contours of iii-v quaternary alloys,” JEM, vol. 7, no. 1, pp. 1-16, Jan. 1978.

[2] I. Vurgaftman, J. R. Meyer, and L. R. Ram-Mohan, “Band parameters for III-V compound semiconductors and their alloys,” J. Appl. Phys., vol. 89, no. 11, pp. 5815-5875, Jun. 2001.