′�?, using a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−1 phonon corresponds into the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical theory computations present the residual absorption of your BGSe https://charliefvspl.blog-a-story.com/12976507/the-smart-trick-of-baga4se7-crystal-that-no-one-is-discussing