′�?, using a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds on the crystal IR absorption edge, in lieu of the residual absorption peak. Density functional idea computations clearly show which the residual absorption on the https://cesaryeijk.theblogfairy.com/31749445/5-easy-facts-about-baga4se7-crystal-described