Figure 2
From: First-Principle Study of the Optical Properties of Dilute-P GaN1−xPx Alloys

(a) Imaginary part of the dielectric function for E ⊥ c direction (ε2, xy (E)) and (b) E ‖ c direction (ε2,Z(E)) spectra for dilute-P GaNP alloys, with P-content varying from 0% up to 12.5% phosphorus, respectively.