Kavli Affiliate: Peidong Yang | First 5 Authors: Hugo Laurell, Hugo Laurell, , , | Summary: In this study, coherent phonon motion is observed in bandgap excited CuIn$_x$Ga$_(1-x)$Se$_2$ (CIGS) utilizing extreme ultraviolet (XUV) attosecond transient absorption spectroscopy across the Se M$_4,5$ absorption edge. Two frequencies of coherent phonon motion are resolved, a low frequency mode […]
Continue.. Coherent phonon motions and ordered vacancy compound mediated quantum path interference in Cu-poor CuIn$_x$Ga$_(1-x)$Se$_2$ (CIGS) with attosecond transient absorption