′�?, with a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−1 phonon corresponds for the crystal IR absorption edge, rather then the residual absorption peak. Density practical idea computations exhibit that the residual absorption of the BGSe crystal https://marcodnqqr.angelinsblog.com/31740592/top-latest-five-baga4se7-crystal-urban-news