′�?, using a frequency of 295 cm−1, is attributed to the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−1 phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density useful theory computations show that the residual absorption with the BGSe https://baga4se7-crystal24578.bloguetechno.com/rumored-buzz-on-baga4se7-crystal-67885967