′�?, with a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−1 phonon corresponds to your crystal IR absorption edge, rather then the residual absorption peak. Density useful theory computations clearly show the residual absorption of the BGSe crystal https://barryg443wkx8.thenerdsblog.com/profile