XPS photoelectron lines, satellite structures and Wagner plot of Cu(II) β-diketonato complexes explained in terms of its electronic environment

A hot carrier perovskite solar cell with efficiency exceeding 27% enabled by ultrafast hot hole transfer with phthalocyanine derivatives

“…The satellite peaks show an increase in binding energy, which suggests a deshielding in the Cu bonding environment. 56 Because the Pc molecules are π-conjugated, the π–π stacking of the Pcs might be similar. The existence of the satellite peaks of Cu could suggest that the SBuPc and SMePc have more Cu exposed to an open environment, possibly to the perovskite surfaces.…”