′�?, having a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−one phonon corresponds for the crystal IR absorption edge, rather than the residual absorption peak. Density functional idea computations exhibit the residual absorption in the BGSe crystal originates https://rickeyl665boa0.blogdosaga.com/32408811/baga4se7-crystal-options