′�?, using a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density practical concept computations present that the residual absorption of the BGSe https://baga4se7crystal29511.bloggip.com/32513315/considerations-to-know-about-baga4se7-crystal