′�?, which has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather than the residual absorption peak. Density useful idea computations clearly show the residual absorption of your BGSe https://camillac589yzw2.wikilentillas.com/user