The reduction of Eu3+ to Eu2+ in BaMgSiO4 : Eu prepared in air and the luminescence of BaMgSiO4 : Eu2+ phosphor
Data(s) |
2003
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Resumo |
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. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Peng MY;Pei ZW;Hong GY;Su Q.The reduction of Eu3+ to Eu2+ in BaMgSiO4 : Eu prepared in air and the luminescence of BaMgSiO4 : Eu2+ phosphor,JOURNAL OF MATERIALS CHEMISTRY ,2003,13(5 ):1202-1205 |
Palavras-Chave | #EARTH IONS #SM #RE3+ #RE2+ #YB #TM |
Tipo |
期刊论文 |