′�?, having a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds to your crystal IR absorption edge, rather then the residual absorption peak. Density useful principle computations demonstrate the residual absorption from the BGSe crystal originates https://andynswyx.vidublog.com/31902470/not-known-details-about-baga4se7-crystal