The Parameters System¶
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solcore.parameter_system.parameter_system.
bow
(parent_0_value, parent_1_value, bowing_parameter, x)[source]¶
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class
solcore.parameter_system.parameter_system.
ParameterSystem
(sources=None)[source]¶ Parameter database/bowing system for compound materials, principally after Vurgaftman et al.
Once instantiated, this plugin loads the materials parameterisations defined with a call to p.add_source(filepath).
Parameters for compound materials can be retrieved with the get_parameter function.
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get_parameter
(material, parameter, verbose=False, **others)[source]¶ Calculate/look up parameters for materials, returns in SI units
Usage: .get_parameter(material_name, parameter_name, **kwargs) - material_name is a string of element symbols/fractions, e.g.: In0.2GaAsP0.1 - parameter_name is a string of - **kwargs captures parameters that may be necessary for some calculations, eg. Temperature
material fractions may also be specified here, e.g.: .get_parameter(“InGaAs”, “band_gap”, In=0.2)If a compound material is bowed between two parent materials, the parent materials’ parameters are calculated recursively with this function. The final parameter is calculated as:
result=parent_0_value * (1-x) + parent_1_value*x - bowing_parameter * (1-x) * xThe function is cached, so that multiple calls with the same parameters do not incur additional overhead.
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