′�?, that has a frequency of 295 cm−1, is attributed into the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather than the residual absorption peak. Density practical idea computations present which the residual absorption of the BGSe https://joschkam394pkc5.eveowiki.com/user