′�?, with a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful principle computations demonstrate the residual absorption in the BGSe crystal originates https://baga4se7-crystal57912.blogdal.com/33156944/examine-this-report-on-baga4se7-crystal