Abstract
We studied the electronic structure of gold nanoparticles deposited on a tungsten surface before and after the deposition of sodium atoms with subsequent heating at T = 630 K by in situ photoelectron spectroscopy in ultrahigh vacuum. The photoemission spectra from the valence band and core levels of Au 4f and Na 2p were studied upon synchrotron excitation in the photon energy range of 80–600 eV. The changes in the spectra of the valence band and core levels of Au 4f and Na 2p are associated with a change in the surface topography caused by the deposition of sodium atoms and heating, which led to an increase in the surface area by several times. The surface topography and cathodoluminescence of a layer of gold nanoparticles deposited on a tungsten surface are studied.
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ACKNOWLEDGMENTS
This research project was supported by a Russian–German laboratory at BESSY II. The authors are grateful to HZB for allocating the synchrotron beam time. The authors are grateful to K.P. Kotlyar for help in preparing the samples.
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Dement’ev, P.A., Ivanova, E.V., Lapushkin, M.N. et al. Gold Nanoparticles Adsorbed on Tungsten: Effect of Sodium Atom Deposition and Heating. Phys. Solid State 62, 1317–1324 (2020). https://doi.org/10.1134/S1063783420080119
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DOI: https://doi.org/10.1134/S1063783420080119