′�?, having a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−one phonon corresponds to the crystal IR absorption edge, in lieu of the residual absorption peak. Density useful theory computations clearly show the residual absorption from the BGSe https://baga4se7-crystal84073.blog-kids.com/33014471/getting-my-baga4se7-crystal-to-work