FermiLevelsProvider2D Class

class plask.flow.FermiLevelsProvider2D(data)

Provider of the quasi-Fermi levels for electrons and holes in Cartesian2D geometry (eV).

This class is used for quasi-Fermi levels for electrons and holes provider in binary solvers. You can also create a custom provider for your Python solver.

Parameters:

data – Data object to interpolate or callable returning it for given mesh. The callable must accept the same arguments as the provider __call__ method (see below). It must also be able to give its length (i.e. have the __len__ method defined) that gives the number of different provided values.

To obtain the value from the provider simply call it. The call signature is as follows:

solver.outFermiLevels(n=0, mesh, interpolation='default')
Parameters:

  • n (int) – Value number.

  • mesh (mesh) – Target mesh to get the field at.

  • interpolation (str) – Requested interpolation method.

Returns:

Data with the quasi-Fermi levels for electrons and holes on the specified mesh (eV).

You may obtain the number of different values this provider can return by testing its length.

Example

Connect the provider to a receiver in some other solver:

>>> other_solver.inFermiLevels = solver.outFermiLevels

Obtain the provided field:

>>> solver.outFermiLevels(0, mesh)
<plask.Data at 0x1234567>

Test the number of provided values:

>>> len(solver.outFermiLevels)
3

See also

Receiver of quasi-Fermi levels for electrons and holes: plask.flow.FermiLevelsReceiver2D Data filter for quasi-Fermi levels for electrons and holes: plask.flow.FermiLevelsFilter2D

Methods

__call__(...)

Get value from the provider.

set_changed()

Inform all connected receivers that the provided value has changed.

Descriptions

Method Details

FermiLevelsProvider2D.__call__(n, mesh, interpolation='DEFAULT')
FermiLevelsProvider2D.__call__(mesh, interpolation='DEFAULT')

Get value from the provider.

Parameters:

  • n (int) – Value number.

  • mesh (mesh) – Target mesh to get the field at.

  • interpolation (str) – Requested interpolation method.

FermiLevelsProvider2D.set_changed()

Inform all connected receivers that the provided value has changed.

The receivers will have its changed attribute set to True and solvers will call the provider again if they need its value (otherwise they might take it from the cache.