′�?, by using a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds into the crystal IR absorption edge, instead of the residual absorption peak. Density functional idea computations exhibit the residual absorption of your BGSe crystal https://baga4se7-crystal51593.bloguerosa.com/31798574/new-step-by-step-map-for-baga4se7-crystal