| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5403209 | Journal of Luminescence | 2007 | 6 Pages |
Abstract
A reduction phenomenon of Eu3+âEu2+ 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+âEu2+ 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 al. [J. Cryst. Growth 198/199 (1999) 869.] and Lin et al. [Mater. Chem. Phys. 70 (2001) 156.]
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Mingying Peng, Guangyan Hong,