Furthermore, a k-point mesh of 7 × 7 × 1 and 13 × 13 × 1 was applied to sample the first Brillouin zone for integrations in the reciprocal space of scattering region (2D monolayer hybrid halide perovskites) and Au electrode, respectively. In addition, self-consistent calculations were converged until each component of the density matrix declined to 10 -5 Hartree.