′�?, using a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−1 phonon corresponds into the crystal IR absorption edge, as opposed to the residual absorption peak. Density functional principle computations present which the residual absorption on the BGSe https://baga4se7-crystal13567.blog-eye.com/32931376/examine-this-report-on-baga4se7-crystal