′�?, by using a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density useful concept computations show the residual absorption of your BGSe crystal https://masonp258ybd5.bimmwiki.com/user