Journal ArticleDOI
Time dependent changes in extreme ultraviolet reflectivity of Ru mirrors from electron-induced surface chemistry
TLDR
In this paper, the surface properties of Ru films were analyzed in situ by means of X-ray photoelectron spectroscopy (XPS) and further verified by Auger electron spectrography (AES), and the impact on EUV reflectivity with time was examined in situ via continuous or discrete EUV exposures.Abstract:
Time dependent changes in 13.5 nm extreme ultraviolet (EUV) reflectivity of Ru mirrors due to variations in surface composition were investigated. The surface properties of Ru films were analyzed in situ by means of X-ray photoelectron spectroscopy (XPS), and further verified by Auger electron spectroscopy (AES). Moreover, the impact on EUV reflectivity (EUVR) with time was examined in situ via continuous and/or discrete EUV exposures. The rapid decrease in EUVR was observed in the presence of photoelectrons (PEs) from Ru mirror of the EUV setup, whereas no significant variation was recorded by screening out additional PEs. Detailed XPS and AES analyses suggest that carbon deposition via dissociation of residual hydrocarbons plays a dominant role in the presence of additional PEs, and thus reduces the reflectivity rapidly. Using EUV photoelectron spectroscopy, systematic reduction of the secondary electron yield from the Ru mirror surface was observed in consecutive scans, and therefore supports the forma...read more
Citations
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Journal ArticleDOI
Carbon contamination and oxidation of Au surfaces under extreme ultraviolet radiation: An x-ray photoelectron spectroscopy study
TL;DR: In this paper, the role of water dissociation in the presence of EUV radiation was discussed and correlated with Au oxidation phenomenon using x-ray photoelectron spectroscopy (XPS).
Journal ArticleDOI
Low energy Ar+ ion irradiation induced surface modification in cadmium zinc telluride (CdZnTe)
TL;DR: In this paper, modifications in structural, stoichiometry, and optical properties of Cadmium zinc telluride (CdZnTe) crystals due to 1 keV Ar+ ion irradiation as a function of ion fluence, using ion flux of 1.7 × 1017 ions cm−2 s−1.
Proceedings Article
Secondary electron emission yields of carbon coated copper and niobium real surfaces
A. Septier,M. Belgaroui +1 more
TL;DR: In this article, various carbon coatings, deposited on real surfaces have been studied: thin evaporated graphite films, implanted C+ ions, sprayed carbon and carbonsoot layers.
Journal ArticleDOI
Tracking electron-induced carbon contamination and cleaning of Ru surfaces by Auger electron spectroscopy
TL;DR: In this paper, the growth of carbon and oxygen desorption was investigated on a Ru surface by Auger electron spectroscopy (AES) in the presence and absence of additional photoelectrons (PEs) from a focusing Ru mirror.
Proceedings ArticleDOI
Spectroscopic reflectometry in the extreme ultraviolet for critical dimension metrology
Lukas Bahrenberg,Serhiy Danylyuk,Robert Michels,Sven Glabisch,Moein Ghafoori,Sascha Brose,Jochen Stollenwerk,Peter Loosen +7 more
TL;DR: In this article, the authors report on critical dimension metrology on nanoscale gratings by means of laboratory-based spectroscopic reflectometry in the extreme ultraviolet (EUV).
References
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Practical surface analysis: By auger and x-ray photoelectron spectroscopy
David Briggs,M. P. Seah +1 more
Journal ArticleDOI
Phonon- Versus Electron-Mediated Desorption and Oxidation of CO on Ru(0001)
Mischa Bonn,Stephan Funk,Christian Hess,Daniel N. Denzler,Catherine Stampfl,Matthias Scheffler,Martin Wolf,Gerhard Ertl +7 more
TL;DR: The presence of this laser-induced reaction pathway allows elucidation of the microscopic mechanism and the dynamics of the carbon monoxide oxidation reaction.
Journal ArticleDOI
X-Ray photoelectron spectroscopic studies of ruthenium-oxygen surfaces
K.S. Kim,Nicholas Winograd +1 more
TL;DR: In this article, the authors used X-ray photoelectron spectroscopy (XPS) to study the complex surface chemistry of the ruthenium-oxygen system as a function of temperature and under the influence of Ar+ and O2+ ion-bombardment.