′�?, with a frequency of 295 cm−1, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds for the crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional theory computations exhibit that the residual absorption of the https://augustuurld.ltfblog.com/31825951/how-much-you-need-to-expect-you-ll-pay-for-a-good-baga4se7-crystal