′�?, with a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density functional idea computations present the residual absorption of your BGSe crystal originates https://baga4se7-crystal38260.eedblog.com/32552587/considerations-to-know-about-baga4se7-crystal