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Title: Electronic structure analysis and properties of Sr{sub 2}CeO{sub 4} grown by sol–gel method

Abstract

Highlights: ► Sr{sub 2}CeO{sub 4} nanopowders were obtained by sol–gel method. ► SEM/EDX imaging and chemical analysis have been done. ► XPS electronic structure was examined and discussed. ► The terminal and equatorial Ce-O bonds contributions were determined in O2p states. ► The energy gap was estimated by valence band and electrical measurements. -- Abstract: Sr{sub 2}CeO{sub 4} is a very promising material due to its various industrial applications, e.g. for the construction of field emission displays and light emitting diodes. In this work, the phosphor was synthesized by the sol–gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) methods. They proved to be very good structural properties of the material and identified negligible impurities from the technological process. The decomposition of the surface of the nanocrystals was found but this did not decrease the spectral features of the compound. The analysis of the XPS O2p lines revealed contributions of two kinds of bonds: terminal and equatorial ones, in the ratio of 2/4. They are separated by 1.2 eV what is in agreement with the observed absorption spectra. A presence of the decomposed layers may produce asymmetric wideningmore » of the emission spectra towards a lower energy.« less

Authors:
 [1];  [2];  [1];  [1];  [3]; ; ;  [1]
  1. Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland)
  2. Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa (Poland)
  3. (Poland)
Publication Date:
OSTI Identifier:
22215543
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTRA; CHEMICAL ANALYSIS; DECOMPOSITION; ELECTRON SPIN RESONANCE; ELECTRONIC STRUCTURE; EMISSION SPECTRA; FIELD EMISSION; LIGHT EMITTING DIODES; NANOSTRUCTURES; POWDERS; SCANNING ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Talik, E., E-mail: talik@us.edu.pl, Lipińska, L., Skrzypek, D., Skuta, A., Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Zajdel, P., Guzik, A., and Duda, H. Electronic structure analysis and properties of Sr{sub 2}CeO{sub 4} grown by sol–gel method. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.08.025.
Talik, E., E-mail: talik@us.edu.pl, Lipińska, L., Skrzypek, D., Skuta, A., Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Zajdel, P., Guzik, A., & Duda, H. Electronic structure analysis and properties of Sr{sub 2}CeO{sub 4} grown by sol–gel method. United States. doi:10.1016/J.MATERRESBULL.2012.08.025.
Talik, E., E-mail: talik@us.edu.pl, Lipińska, L., Skrzypek, D., Skuta, A., Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Zajdel, P., Guzik, A., and Duda, H. Thu . "Electronic structure analysis and properties of Sr{sub 2}CeO{sub 4} grown by sol–gel method". United States. doi:10.1016/J.MATERRESBULL.2012.08.025.
@article{osti_22215543,
title = {Electronic structure analysis and properties of Sr{sub 2}CeO{sub 4} grown by sol–gel method},
author = {Talik, E., E-mail: talik@us.edu.pl and Lipińska, L. and Skrzypek, D. and Skuta, A. and Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa and Zajdel, P. and Guzik, A. and Duda, H.},
abstractNote = {Highlights: ► Sr{sub 2}CeO{sub 4} nanopowders were obtained by sol–gel method. ► SEM/EDX imaging and chemical analysis have been done. ► XPS electronic structure was examined and discussed. ► The terminal and equatorial Ce-O bonds contributions were determined in O2p states. ► The energy gap was estimated by valence band and electrical measurements. -- Abstract: Sr{sub 2}CeO{sub 4} is a very promising material due to its various industrial applications, e.g. for the construction of field emission displays and light emitting diodes. In this work, the phosphor was synthesized by the sol–gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) methods. They proved to be very good structural properties of the material and identified negligible impurities from the technological process. The decomposition of the surface of the nanocrystals was found but this did not decrease the spectral features of the compound. The analysis of the XPS O2p lines revealed contributions of two kinds of bonds: terminal and equatorial ones, in the ratio of 2/4. They are separated by 1.2 eV what is in agreement with the observed absorption spectra. A presence of the decomposed layers may produce asymmetric widening of the emission spectra towards a lower energy.},
doi = {10.1016/J.MATERRESBULL.2012.08.025},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}