Fig. 2
From: Revealing hole trapping in zinc oxide nanoparticles by time-resolved X-ray spectroscopy

Ground-state and 80 ps transient X-ray absorption spectrum (XAS). Experimental ground-state XAS (black) and transient XAS difference of the excited minus the unexcited spectra (red) at 80 ps time delay after photo excitation with 355 nm. Error bars shown are the standard error of the experimental measurement