In Figure , a large excitonic effect is clear, with a red-shift of the onset of the BSE spectrum of at least 0.5 eV. The major band-to-band peaks in the RPA are also replicated, with the transition at 5 eV being -an additional Gaussian smearing of 0.02 eV was added to the QSG Ŵ spectra to match that of the HSE06 spectrum.