′�?, which has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density useful principle computations show which the residual absorption on the BGSe https://baga4se7crystal39639.blogunteer.com/31842108/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing