SEARCH Articles Figures Tables Density functional theory Coulomb holes Density functional theory Fermi holes Density functional theory exchange-correlation holes Electron Density and Hole Functions Exchange-correlation hole functions Excitons particle-hole correlation function Extended particle-hole Green’s functions From Holes to Functionals Hole distribution function Self-Energy and Spectral Function for a Core Hole. The Quasi-Particle Picture Solution-Processed Metal Oxides Functioning as Hole Transport Layers (HTLs) Wave functions exchange-correlation holes