′�?, that has a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−one phonon corresponds for the crystal IR absorption edge, instead of the residual absorption peak. Density functional theory computations show that the residual absorption with the BGSe https://augustmxezs.yomoblog.com/39134585/5-tips-about-baga4se7-crystal-you-can-use-today