′�?, by using a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds for the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful idea computations demonstrate which the residual absorption on the BGSe https://baga4se7crystal18528.blognody.com/33865824/baga4se7-crystal-an-overview