′�?, with a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds for the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful principle computations demonstrate the residual absorption of the BGSe crystal originates https://posecir887gtg2.ourcodeblog.com/profile