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  Reduction from Eu3+ to Eu2+ in BaAl2O4 : Eu phosphor prepared in an oxidizing atmosphere and luminescent properties of BaAl2O4 : Eu

Peng, M., & Hong, G. (2007). Reduction from Eu3+ to Eu2+ in BaAl2O4: Eu phosphor prepared in an oxidizing atmosphere and luminescent properties of BaAl2O4: Eu. JOURNAL OF LUMINESCENCE, 127(2), 735-740. doi:10.1016/j.jlumin.2007.04.012.

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 Urheber:
Peng, Mingying1, Autor           
Hong, Guangyan2, Autor
Affiliations:
1Max Planck Research Group, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364712              
2external, ou_persistent22              

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Schlagwörter: RARE-EARTH IONS; VALENCE-CHANGE; CRYSTAL-STRUCTURE; EUROPIUM IONS; AIR; ALUMINATE; BARIUM; EMISSION; CASO4-EU; GLASSOptics; europium; aluminate phosphors; luminescence;
 Zusammenfassung: A reduction phenomenon of Eu3+ -> Eu2+ was observed for the first time when Eu3+ ions were doped into an AlO4-tetrahedron-containing compound BaAl2O4 in an oxidizing atmosphere of air by high-temperature solid-state reaction. X-ray powder diffraction patterns and photoluminescent spectra are used to confirm the compound structure and detect the simultaneous existence of both divalent and trivalent europium ions, respectively. The abnormal Eu3+ -> Eu2+ reduction is explained by a charge compensation model. Spectroscopic properties of BaAl2O4:Eu are discussed and Eu2+ emission spectrum shows consistence with the results reported by Katsumata et a]. [J. Cryst. Growth 198/199 (1999) 869.] and Lin et al. [Mater. Chem. Phys. 70 (2001) 156.]. (C) 2007 Elsevier B.V. All rights reserved.

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Sprache(n): eng - English
 Datum: 2007
 Publikationsstatus: Erschienen
 Seiten: 6
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000249567300069
DOI: 10.1016/j.jlumin.2007.04.012
 Art des Abschluß: -

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Titel: JOURNAL OF LUMINESCENCE
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS : ELSEVIER SCIENCE BV
Seiten: - Band / Heft: 127 (2) Artikelnummer: - Start- / Endseite: 735 - 740 Identifikator: ISSN: 0022-2313