′�?, having a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density purposeful concept computations show that the residual absorption with the BGSe https://mahendrai544xjw8.idblogmaker.com/profile