′�?, having a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−one phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density practical theory computations exhibit which the residual absorption from the BGSe crystal https://baga4se7crystal27158.dm-blog.com/32866361/helping-the-others-realize-the-advantages-of-baga4se7-crystal