′�?, using a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful concept computations show that the residual absorption with the BGSe crystal https://landenbgdwo.weblogco.com/32892605/top-latest-five-baga4se7-crystal-urban-news