′�?, using a frequency of 295 cm−1, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−one phonon corresponds into the crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional idea computations demonstrate the residual absorption of your BGSe https://baga4se7crystal96283.amoblog.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-baga4se7-crystal-54596920