Doping{ }

Calling sequence

Structure{ Doping{ ... } }

Properties

usage: \(\mathrm{\textcolor{ForestGreen}{optional}}\)

Functionality

Defines homogeneous doping between starting and ending point in the heterostructure. The doping can be in barriers or wells or both. The origin of the coordinate is the start of the first barrier. Multiple doping regions are allowed in a structure, by defining several Doping{...} groups.

Example

Structure{
    Doping{
        DopingType = N
        DopingStart = 2.0
        DopingEnd = 10.5

        DopingSpecification = 2dequiv
        DopingDensity = 5.0e11 # cm^-2
    }

    Doping{
        DopingType = P
        DopingStart = 17.0
        DopingEnd = 23.2

        DopingSpecification = 3ddoped
        DopingDensity = 1.5e17 # cm^-3
    }
}

The following keywords are available within this group:

DopingType

Calling sequence

Structure{ Doping{ DopingType = } }

Properties

type: character string
choices: N; P
default: N

Functionality

Specifies whether the doping is n- or p-type.

DopingStart

Calling sequence

Structure{ Doping{ DopingStart = } }

Properties

type: real number
values: [0.0, ...)
unit: \(\mathrm{nm}\)

Functionality

Sets the starting position of the doping region.

DopingEnd

Calling sequence

Structure{ Doping{ DopingEnd = } }

Properties

type: real number
values: [0.0, ...)
unit: \(\mathrm{nm}\)

Functionality

Sets the ending position of the doping region.

DopingSpecification

Calling sequence

Structure{ Doping{ DopingSpecification = } }

Properties

type: integer
type: character string

Functionality

Chooses how the doping density is specified:

0 or 2dequiv = 2D equivalent density per period in unit: \(\mathrm{cm^{-2}}\)

1 or 3ddoped = 3D doping density in the doped region in unit: \(\mathrm{cm^{-3}}\)

2 or 3dall = Averaged 3D doping density over the whole structure in unit: \(\mathrm{cm^{-3}}\)

DopingDensity

Calling sequence

Structure{ Doping{ DopingDensity = } }

Properties

type: real number

Functionality

The units are according to DopingSpecification.

Note

The doping densities should be realistic (of the order of \(1\mathrm{e}10 \mathrm{cm}^{-2}\) instead of \(0.1 \mathrm{cm}^{-2}\)) to produce broadening. Intrinsic doping is not yet implemented.