′�?, with a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather then the residual absorption peak. Density functional concept computations exhibit the residual absorption on the BGSe crystal originates https://samuelj925opo8.blogscribble.com/profile