| 亚微米级红色荧光粉NaEu(MoO4)2的水热合成及光谱特性 |
| Hydrothermal Synthesis and Spectral Properties of NaEu(MoO4)2 Red Submicro-Phosphors |
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| 摘要: |
| 关键词: 荧光粉 Eu3+ 水热合成 钼酸盐 |
| 基金项目: |
| Abstract: The hyperfine red phosphors, NaEu(MoO4)2, were synthesized by hydrothermal and subsequent heat-treatment processes. The NaEu(MoO4)2 phosphors show regular elliptical morphologies, and the particle sizes of 0.25～0.3 μm. The excitation spectra located at short-wavelength UV region belong to the interweave broad charge transfer bands of Mo6+-O2- and Eu3+-O2-, and the three sharp lines around 395 nm, 465 nm and 535 nm are ascribed to the Eu3+ 4f excitation transitions. All of the samples can be excited with near-UV 395 nm light and exhibit the characteristic red emission of Eu3+ 5D0→7F2 transition. The relative red emission intensities of the optimum phosphors reach two-fold as compared with that of the commercial phosphors. The submicro-phosphors may be applied as red phosphors for white light emitting diodes. |
| Keywords: phosphor Eu3+ hydrothermal synthesis molybdate |
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| 摘要点击次数: 1411 |
| 全文下载次数: 1892 |
| 张 艳,宫慧丽,石士考,周 济,叶建平.亚微米级红色荧光粉NaEu(MoO4)2的水热合成及光谱特性[J].无机化学学报,2009,25(3):563-566. |
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