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Issue 5, 2003
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The reduction of Eu3+ to Eu2+ in BaMgSiO4∶Eu prepared in air and the luminescence of BaMgSiO4∶Eu2+ phosphor

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Abstract

The reduction of Eu3+ to Eu2+ in air has been observed in a silicate matrix for the first time in BaMgSiO4∶Eu prepared by high-temperature solid-state reaction. Emission and excitation spectra were employed to detect the presence of Eu2+ ions in the compound and this reduction was explained by a charge compensation model proposed previously. In BaMgSiO4∶Eu2+, Eu2+ ions occupy three different lattice sites by substitution for Ba2+ ions. Eu2+ ions on Ba(1) and Ba(2) sites gave emissions at about 500 nm while that on Ba(3) site showed an emission band at 398 nm. All the emissions of Eu2+ ions in BaMgSiO4∶Eu2+ were not quenched at room temperature.

Graphical abstract: The reduction of Eu3+ to Eu2+ in BaMgSiO4∶Eu prepared in air and the luminescence of BaMgSiO4∶Eu2+ phosphor

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Publication details

The article was received on 26 Nov 2002, accepted on 29 Jan 2003 and first published on 28 Mar 2003


Article type: Paper
DOI: 10.1039/B211624C
Citation: J. Mater. Chem., 2003,13, 1202-1205
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    The reduction of Eu3+ to Eu2+ in BaMgSiO4∶Eu prepared in air and the luminescence of BaMgSiO4∶Eu2+ phosphor

    M. Peng, Z. Pei, G. Hong and Q. Su, J. Mater. Chem., 2003, 13, 1202
    DOI: 10.1039/B211624C

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