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Velocity map imaging VUV angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles

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Abstract

The angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles was carried out by using velocity map imaging technique at the DESIRS beamline of SOLEIL synchrotron facility. The reported spectroscopy results were obtained after interaction of the synchrotron radiation with a polydisperse aerosol produced from aqueous dispersion of silver sulfide particles, approximately 16 nm in diameter. The photoelectron and UV–Vis-NIR absorption spectra were used to estimate the maximum energy of the valance- and the minimum energy of the conduction-band of the nanoparticles. With respect to the vacuum level, the obtained values were found to be 5.5 ± 0.1 eV and 4.5 ± 0.1 eV for the valence band maximum and conduction band minimum, respectively. The dependence of the asymmetry parameter on the electron energy along the silver sulfide valence band showed an onset of inelastic scattering at ~ 1 eV electron kinetic energy.

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Acknowledgements

The VUV VMI-PES experiments on isolated Ag2S NP were performed at the DESIRS beamline at Synchrotron SOLEIL as a part of the research project no. 20180566. The authors acknowledge the support of the entire staff of Synchrotron SOLEIL for smooth operation during the beamtime. The authors are also grateful to Ministry of Education, Science and Technological Development of the Republic of Serbia for financial support.

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Authors and Affiliations

  1. Department of Radiation Chemistry and Physics, “Vinča” Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11001, Belgrade, Serbia

    Danijela Danilović, Dušan K. Božanić, Una Stamenović, Vesna V. Vodnik & Vladimir Djoković

  2. Synchrotron SOLEIL, l’Orme des Merisiers, St. Aubin, BP48, 91192, Gif sur Yvette Cedex, France

    Gustavo A. Garcia & Laurent Nahon

Authors
  1. Danijela Danilović
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  2. Dušan K. Božanić
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  3. Gustavo A. Garcia
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  4. Laurent Nahon
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  5. Una Stamenović
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  6. Vesna V. Vodnik
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  7. Vladimir Djoković
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Correspondence to Dušan K. Božanić or Vladimir Djoković.

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Danilović, D., Božanić, D.K., Garcia, G.A. et al. Velocity map imaging VUV angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles. Opt Quant Electron 54, 604 (2022). https://doi.org/10.1007/s11082-022-03972-6

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