′�?, having a frequency of 295 cm−1, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, rather than the residual absorption peak. Density functional idea computations demonstrate that the residual absorption on the BGSe crystal https://jakes900nal4.dekaronwiki.com/user