′�?, with a frequency of 295 cm−one, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather then the residual absorption peak. Density practical theory computations show the residual absorption of the BGSe crystal originates https://barryl665aob0.nico-wiki.com/user