CONSIDERATIONS TO KNOW ABOUT BAGA4SE7 CRYSTAL

′�?, that has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption of your 295 cm−one phonon corresponds on the crystal IR absorption edge, rather then the residual absorption peak. Density functional theory computations clearly show the residual absorption with the BGSe crystal orig