′�?, that has a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density functional idea computations demonstrate which the residual absorption on the BGSe https://jonathant581hkn8.blogsuperapp.com/profile