′�?, having a frequency of 295 cm−1, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−one phonon corresponds into the crystal IR absorption edge, in lieu of the residual absorption peak. Density useful concept computations present that the residual absorption with the BGSe https://robertu480aee4.wikiexcerpt.com/user