Synthesis and luminescence properties of a broad-band red phosphor Ca sub(3Si) sub(2)O sub(7:Eu) super(2)+ for warm white light-emitting diodes
Single-phase broad-band red-emitting Ca sub(3Si) sub(2)O sub(7:Eu) super(2)+ phosphors, with photoluminescence features that qualify them as candidates for white light-emitting diodes applications, were successfully synthesized via a modified solid-state reaction method that employed H sub(3BO) sub(...
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| Veröffentlicht in: | Journal of luminescence 2012-01, Vol.132 (1), p.71-75 |
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| container_title | Journal of luminescence |
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| creator | Qian, Fengjiao Fu, Renli Agathopoulos, Simeon Gu, Xiguang Song, Xiufeng |
| description | Single-phase broad-band red-emitting Ca sub(3Si) sub(2)O sub(7:Eu) super(2)+ phosphors, with photoluminescence features that qualify them as candidates for white light-emitting diodes applications, were successfully synthesized via a modified solid-state reaction method that employed H sub(3BO) sub(3) as a flux. The phosphors produced have an intense broad red emission band, with a peak at 603 nm, a full width at half maximum of 110 nm, and color coordinates of (0.550, 0.438). Concentration quenching occurred at 0.01 mol Eu super(2+. The discussion of the results shows that Eu) super(2)+ ions should be accommodated at the Ca-sites of the lattice, dipole-dipole interactions should predominantly govern the energy transfer mechanism among them, and the critical distance between them is [not, vert, similar]31 Aa. |
| doi_str_mv | 10.1016/j.jlumin.2011.07.009 |
| format | Article |
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The phosphors produced have an intense broad red emission band, with a peak at 603 nm, a full width at half maximum of 110 nm, and color coordinates of (0.550, 0.438). Concentration quenching occurred at 0.01 mol Eu super(2+. 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The phosphors produced have an intense broad red emission band, with a peak at 603 nm, a full width at half maximum of 110 nm, and color coordinates of (0.550, 0.438). Concentration quenching occurred at 0.01 mol Eu super(2+. 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The phosphors produced have an intense broad red emission band, with a peak at 603 nm, a full width at half maximum of 110 nm, and color coordinates of (0.550, 0.438). Concentration quenching occurred at 0.01 mol Eu super(2+. The discussion of the results shows that Eu) super(2)+ ions should be accommodated at the Ca-sites of the lattice, dipole-dipole interactions should predominantly govern the energy transfer mechanism among them, and the critical distance between them is [not, vert, similar]31 Aa.</abstract><doi>10.1016/j.jlumin.2011.07.009</doi></addata></record> |
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| ispartof | Journal of luminescence, 2012-01, Vol.132 (1), p.71-75 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Color Emission Energy transfer Flux Light-emitting diodes Luminescence Phosphors Quenching |
| title | Synthesis and luminescence properties of a broad-band red phosphor Ca sub(3Si) sub(2)O sub(7:Eu) super(2)+ for warm white light-emitting diodes |
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