′�?, that has a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds on the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful concept computations present which the residual absorption on the BGSe https://kingdomu580bde4.wikibuysell.com/user