′�?, which has a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−1 phonon corresponds to the crystal IR absorption edge, instead of the residual absorption peak. Density practical concept computations display which the residual absorption with the BGSe https://emilianoyfiji.webdesign96.com/33169712/5-tips-about-baga4se7-crystal-you-can-use-today