Materials

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Materials

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Materials can handle the following arguments:

 

Function

Meaning

(n at 540 nm)

Returns the real part of the refractive index of the object at 540 nm. You can use alternative spectral units like 1/cm or eV if you like.

(k at 540 nm)

This function returns the imaginary part of the refractive index of the object at 540 nm.

(alpha at 540 nm)

Returns the absorption coefficient (in 1/cm) of the object at 540 nm.

(alpha1E4)

Returns the wavenumber for which the absorption coefficient has the value 10000 1/cm. This position is sometimes used to quantify the electronic gap. This function will work properly only if the following rules are satisfied:

1. The absorption coefficient of the material is below 10000 1/cm for large wavelengths and above 10000 1/cm at small wavelengths.

2. There is only one position in the spectral range of the material where the absorption coefficient has the value 10000 1/cm.

If the position cannot be identified a value of 0 is returned.

(carrier concentration)

If there is a Drude model or an extended Drude model used in the material object, the carrier concentration is computed and returned using the unit 1020 cm-3.(

(conductivity)

If there is a Drude model or an extended Drude model used in the material object, the conductivity is computed and returned using the unit Ω-1 cm-1.

(resistivity)

If there is a Drude model or an extended Drude model used in the material object, the resistivity is computed and returned using the unit Ω cm.

(mobility)

If there is a Drude model or an extended Drude model used in the material object, the mobility is computed and returned using the unit cm2 V-1 s-1.