′�?, that has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds to your crystal IR absorption edge, rather then the residual absorption peak. Density useful theory computations demonstrate the residual absorption with the BGSe crystal https://ferdinandq235jfb2.blogrelation.com/profile