′�?, that has a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds to your crystal IR absorption edge, rather than the residual absorption peak. Density purposeful idea computations exhibit which the residual absorption in the BGSe https://wayneh925nop9.wikihearsay.com/user