tidy3d.DualValleyEffectiveDOS

class DualValleyEffectiveDOS

Bases: EffectiveDOS

Effective density of states model that assumes combination of light holes and heavy holes with isotropic effective masses. The model assumes the standard equation for the 3D semiconductor with parabolic energy dispersion:

Parameters:

• attrs (dict = {}) – Dictionary storing arbitrary metadata for a Tidy3D object. This dictionary can be freely used by the user for storing data without affecting the operation of Tidy3D as it is not used internally. Note that, unlike regular Tidy3D fields, attrs are mutable. For example, the following is allowed for setting an attr obj.attrs['foo'] = bar. Also note that Tidy3D will raise a TypeError if attrs contain objects that can not be serialized. One can check if attrs are serializable by calling obj.json().

• m_eff_lh (PositiveFloat) – Relative effective mass of the light holes. This is a relative value compared to the electron mass at rest.

• m_eff_hh (PositiveFloat) – Relative effective mass of the heavy holes. This is a relative value compared to the electron mass at rest.

Notes

\[N_{eff} = 2 \left( \frac{m_{\text{eff, lh}} m_e k_B T}{2 \pi \hbar^2} \right)^{3/2} + 2 \left( \frac{m_{\text{eff, hh}} m_e k_B T}{2 \pi \hbar^2} \right)^{3/2}\]

Attributes

attrs

Methods

calc_eff_dos(T)

Abstract method to calculate the effective density of states.

Inherited Common Usage

m_eff_lh

m_eff_hh

calc_eff_dos(T)

Abstract method to calculate the effective density of states.

__hash__()

Hash method.