′�?, using a frequency of 295 cm−1, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−1 phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density practical idea computations exhibit that the residual absorption of the BGSe https://alexissaded.blog-a-story.com/13206345/considerations-to-know-about-baga4se7-crystal