′�?, with a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds on the crystal IR absorption edge, in lieu of the residual absorption peak. Density useful theory computations exhibit that the residual absorption of the BGSe https://ghomsheiz571ggk6.wikiworldstock.com/user