MTFA is Python module for solving Poisson equation with Modified Tomas-Fermi approximation (MTFA).

from mtfa import Material, Structure

# define structure
InN = Material('InN')
s = Structure(InN, Nd=1.9e19)

s.V0 = -0.735  # set surface potential

# solve Poisson equation
s.initGuess()
s.solve()

plt.plot(s.z, s.sol)  # plot solution

Properties of semiconductor materials is defined in database.py.

1. Inversion and accumulation layers at InN surfaces TD Veal, LFJ Piper, WJ Schaff, CF McConville - Journal of crystal growth, 2006
2. A novel self-consistent theory of the electronic structure of inversion layers in InSb MIS structures J.-P. Zöllner, H. Übensee, G. Paasch, T. Fiedler and G. Gobsch - physica status solidi (b), 1986