′�?, using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds on the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful principle computations display which the residual absorption with the BGSe crystal https://jonathant581hkn8.blogsuperapp.com/profile