′�?, having a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−1 phonon corresponds to the crystal IR absorption edge, instead of the residual absorption peak. Density functional idea computations present the residual absorption from the BGSe crystal originates https://deanehfca.diowebhost.com/87647331/top-latest-five-baga4se7-crystal-urban-news