CONSIDERATIONS TO KNOW ABOUT BAGA4SE7 CRYSTAL

′�?, by using a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−1 phonon corresponds to your crystal IR absorption edge, instead of the residual absorption peak. Density functional theory computations show which the residual absorption on the BGSe crystal originates