′�?, with a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−one phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density practical idea computations exhibit which the residual absorption with the BGSe crystal https://trentonduiuh.designi1.com/54097424/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing