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Title: Concentration effect of Er{sup 3+} ions on structural and spectroscopic properties of CdNb{sub 2}O{sub 6} phosphors

Excitation and emission spectra of a visible room-temperature Er{sup 3+} ions luminescence from powders. - Highlights: • This is the first report on spectroscopic properties of CdNb{sub 2}O{sub 6}:Er{sup 3+}. • The crystalline sizes are affected as the concentration of Er{sup 3+} ions increased. • Quenching of the luminescence was observed to be above 1.0 mol% Er{sup 3+}. - Abstract: This study is focused on the synthesis and characterization of CdNb{sub 2}O{sub 6} compounds doped with of Er{sup 3+} ions. Powders were synthesized by using the molten salt method and annealed at 900 °C for 4 h. The synthesized particles were structurally characterized by using X-ray diffraction, scanning electron microscopy. A single phase of the CdNb{sub 2}O{sub 6} was determined and the size of the particles was found to be affected by the presence and the concentration of Er{sup 3+} ions. Luminescence properties of each sample were investigated by measuring accurately the emission and excitation spectra at room temperature in the wavelength range of 200–1700 nm by exciting the Er{sup 3+} ions at 379 nm and 805 nm. Quenching of the luminescence in both visible and near infrared spectral regions was observed to be above 1.0 mol% Er{sup 3+} concentration.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1]
  1. İstanbul Technical University, Physics Engineering, Maslak 34469, Istanbul (Turkey)
  2. Marmara University, Department of Physics, Kadikoy 34722, Istanbul (Turkey)
  3. Marmara University, Department of Chemistry, Kadikoy 34722, Istanbul (Turkey)
  4. Marmara University, Department of Metalurgy and Material Engineering, Kadikoy 34722, Istanbul (Turkey)
Publication Date:
OSTI Identifier:
22420698
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 60; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; CADMIUM COMPOUNDS; CERAMICS; CONCENTRATION RATIO; DOPED MATERIALS; EMISSION SPECTRA; ERBIUM IONS; EXCITATION; LUMINESCENCE; MOLTEN SALTS; NIOBATES; PHOSPHORS; POWDERS; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; X-RAY DIFFRACTION