“…The band edge position with respect to the NHE was calculated via the following equation: 80,81
where, E 0 and E HSE06 g are the free electron energy on the hydrogen scale (∼−4.50 eV) and the band gap energy computed via the HSE06 functional, respectively, and χ is the absolute electronegativity of the semiconductor calculated using the following equation: 82,83
where, χ X , χ Y and χ Z are the absolute electronegativity of X, Y and Z atoms (X = Si, Y = C and Z = N atom), while α , β and γ are the number of Si, C and N atoms, respectively. The values of absolute electronegativity of these atoms were calculated by Bartolotti: 84 χ Si = 3.60 eV, χ C = 5.13 eV and χ N = 6.97 eV.…”