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. 2019 Dec 23;13(1):93. doi: 10.3390/ma13010093

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Measured and fitted Y 3d core level spectra in (a) undoped Y₂O_3−xS_x and (b) Y₂O_3−xS_x:Eu prepared using the Eu(thd)₃/O₃ pulse sequence. (c) Measured and fitted Y 3d/S 2p spectra in Y₂O_3−xS_x:Eu prepared using the Eu(thd)₃/H₂S pulse sequence. Open symbols represent measured spectra, whereas continuous lines show fitting results.