′�?, using a frequency of 295 cm−1, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−one phonon corresponds on the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful principle computations demonstrate which the residual absorption of the BGSe crystal https://walterc680zvp8.wikitidings.com/user