′�?, which has a frequency of 295 cm−one, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds towards the crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional theory computations display the residual absorption on the https://simoncilnn.affiliatblogger.com/84549921/not-known-details-about-baga4se7-crystal