′�?, using a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−one phonon corresponds to your crystal IR absorption edge, instead of the residual absorption peak. Density functional idea computations exhibit the residual absorption of the BGSe crystal originates https://baga4se7-crystal02456.blogrenanda.com/38995254/not-known-facts-about-baga4se7-crystal