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- W4385330266 abstract "Abstract Determining the absolute band edge positions in solid materials is crucial for optimising their performance in wide‐ranging applications including photocatalysis and electronic devices. However, obtaining absolute energies is challenging, as seen in CeO 2 , where experimental measurements show substantial discrepancies in the ionisation potential (IP). Here, we have combined several theoretical approaches, from classical electrostatics to quantum mechanics, to elucidate the bulk and surface contributions to the IP of metal oxides. We have determined a theoretical bulk contribution to the IP of stoichiometric CeO 2 of only 5.38 eV, while surface orientation results in intrinsic IP variations ranging from 4.2 eV to 8.2 eV. Highly tuneable IPs were also found in TiO 2 , ZrO 2 , and HfO 2 , in which surface polarisation plays a pivotal role in long‐range energy level shifting. Our analysis, in addition to rationalising the observed range of experimental results, provides a firm basis for future interpretations of experimental and computational studies of oxide band structures." @default.
- W4385330266 created "2023-07-29" @default.
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- W4385330266 date "2023-08-24" @default.
- W4385330266 modified "2023-10-17" @default.
- W4385330266 title "Bulk and Surface Contributions to Ionisation Potentials of Metal Oxides" @default.
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- W4385330266 doi "https://doi.org/10.1002/anie.202308411" @default.
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