′�?, using 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 towards the crystal IR absorption edge, as opposed to the residual absorption peak. Density functional theory computations exhibit that the residual absorption of the BGSe https://baga4se7crystal30639.csublogs.com/39417388/the-ultimate-guide-to-baga4se7-crystal