′�?, which has a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−one phonon corresponds towards the crystal IR absorption edge, rather than the residual absorption peak. Density useful theory computations show the residual absorption of your BGSe crystal https://genghisk036qrp9.wikimidpoint.com/user