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Dean Huang e9bd61b56f start
2025-12-08 10:11:12 +08:00

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Python

# Copyright 2013 DEVSIM LLC
#
# SPDX-License-Identifier: Apache-2.0
# material parameter value unit description
# constants = (
# ("global", "Permittivity", 8.85418782e-14, "F/cm^2", "Permittivity of Free Space"),
# ("SiO2", "epsr", 3.9, "", "Relative Permittivity"),
# ("global", "ElectronCharge", 1.60217646e-19, "coul", "Charge of electrons")
# ("Si", "epsr", 11.7, "", "Relative Permittivity"),
# ("Si", "NC300", 3.23e19, "#/cm^3", "Conduction band DOS at 300K"),
# ("Si", "NV300", 1.83e19, "#/cm^3", "Valence band DOS at 300K"),
# ("Si", "EG300", 1.12, "eV", "Energy gap at 300K"),
# ("Si", "EG_ALPHA", 0.0, "", "Temperature dependence of Energy gap model"),
# ("Si", "EG_BETA", 0.0, "", "Temperature dependence of Energy gap model"),
# )
#
#####
##### These will become part of package
#####
##### Need relation between EF and Potential
#
# Eta_C = "(EF - EC)/(k * T)"
# Eta_V = "(EV - EF)/(k * T)"
#
#
##### EG MODEL from Wikipedia
# EG(T) = EG(0) - (EG_ALPHA * T^2)/(T + EG_BETA)
# ni(T) = (NC * NV)^0.5 * exp(-EG/(2 * k * T))