′�?, that has a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful idea computations exhibit the residual absorption from the BGSe crystal https://baga4se7crystal06283.goabroadblog.com/31932198/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing