The band gap energies of zinc-blende InNxAs1-x alloy as a function
of its nitrogen composition have been calculated using the density
functional theory. The results agree well with those obtained from
experimental results. The minimum band gap energy of InNxAs1-x
alloy obtained is 70 meV at its N composition of 0.45. The band gap bowing
coefficient of InNxAs1-x alloy is obtained from the curve fitting
of the simulated band gap energy versus the nitrogen composition, x. The
band gap bowing coefficient of zinc-blende InNxAs1-x alloy is
found to be 2.072 ± 0.236 eV. The energy band gap for InN is also
correctly predicted from this calculation.