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Accurate Computational Prediction of Core-Electron Binding Energies in Carbon-Based Materials: A Machine-Learning Model Combining Density-Functional Theory and GW

  • Technische Universität Dresden
  • University of Vienna

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

55 Sitaatiot (Scopus)
214 Lataukset (Pure)

Abstrakti

We present a quantitatively accurate machine-learning (ML) model for the computational prediction of core-electron binding energies, from which X-ray photoelectron spectroscopy (XPS) spectra can be readily obtained. Our model combines density functional theory (DFT) with GW and uses kernel ridge regression for the ML predictions. We apply the new approach to disordered materials and small molecules containing carbon, hydrogen, and oxygen and obtain qualitative and quantitative agreement with experiment, resolving spectral features within 0.1 eV of reference experimental spectra. The method only requires the user to provide a structural model for the material under study to obtain an XPS prediction within seconds. Our new tool is freely available online through the XPS Prediction Server.

AlkuperäiskieliEnglanti
Sivut6240−6254
JulkaisuChemistry of Materials
Vuosikerta34
Numero14
DOI - pysyväislinkit
TilaJulkaistu - 13 heinäk. 2022
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

The authors acknowledge funding from the Academy of Finland under Projects 316168 (D.G.), 334532 (P.R.), 310574, 329483, 330488 (M.A.C.), and 321713 (M.A.C. and P.H.-L.) and from their flagship program Finnish Center for Artificial Intelligence (FCAI), from the Emmy Noether Programme of the German Research Foundation under Project Number 453275048 (D.G.), from COST action CA18234, and from the European Research Council (ERC) under the European Union’s Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 756277-ATMEN (T.S.). Computing time from CSC–IT Center for Science, allocated for the Grand Challenge Project XPEC, is gratefully acknowledged. Part of this work was carried out during a HPC-Europa3 mobility exchange (Horizon 2020 Program under Grant Agreement 730897). We thank V.L. Deringer for providing the a-CO structural models used in this study. x

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