′�?, by using a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−1 phonon corresponds to the crystal IR absorption edge, instead of the residual absorption peak. Density purposeful principle computations demonstrate the residual absorption in the BGSe crystal https://baga4se7crystal84172.articlesblogger.com/55311008/a-simple-key-for-baga4se7-crystal-unveiled