′�?, having a frequency of 295 cm−1, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful principle computations demonstrate that the residual absorption of the BGSe crystal https://tysonxcdbc.activosblog.com/31761331/rumored-buzz-on-baga4se7-crystal