pvdeg.letid.j0_gray

pvdeg.letid.j0_gray(ni2, diffusivity, na, diffusion_length, arg, srv)

Return j0 (saturation current density in quasi-neutral regions of a solar cell).

See eq. 3.128 in [1].

Parameters:

• ni2 (numeric) – intrinsic carrier concentration [m⁻³].

• diffusivity (numeric) – carrier diffusivity [m/s].

• na (numeric) – doping density [m⁻³].

• diffusion_length (numeric) – carrier diffusion length [m].

• arg (numeric) – (W-xn)/Lp term, (wafer_thickness-depletion region thickness)/diffusion_length [unitless].

• srv (numeric) – surface recombination velocity [m/s].

Returns:

numeric – j0 [A]

References

[1]

J. L. Gray, “The Physics of the Solar Cell,” in Handbook of Photovoltaic Science and Engineering, A. Luque and S. Hegedus, Eds. Chichester, UK: John Wiley & Sons, Ltd, 2011, pp. 82-129. doi: 10.1002/9780470974704.ch3.