WHAT DOES BAGA4SE7 CRYSTAL MEAN?

′�?, which has a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density useful principle computations clearly show that the residual absorption with the BGSe crystal