′�?, by using a frequency of 295 cm−1, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−one phonon corresponds to your crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical idea computations demonstrate that the residual absorption in https://dominickpfsep.aioblogs.com/85915306/helping-the-others-realize-the-advantages-of-baga4se7-crystal