Red-emitting SrIn2O4 : Eu3+ phosphor powders for applications in solid state white lamps
Red-emitting SrIn2O4 : Eu3+ phosphor powders for applications in solid state white lamps
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DOI：
10.1088/0022-3727/41/9/092005
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
C. Rodríguez-García;N. Peréa-López;G. Hirata;S. Denbaars
中科院分区：
文献类型：
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作者：
C. Rodríguez-García;N. Peréa-López;G. Hirata;S. Denbaars
采用高压辅助燃烧合成的方法制备了Eu3+活化的SrIn2O4发红光荧光粉。这些氧化物荧光粉的x射线衍射分析显示，在% Eu浓度高达4时，形成了单相正交SrIn2O4。详细的光致发光（PL）和阴极发光研究表明，Eu3+的5 D0→7FJ壳内跃迁产生了明亮的红色发射。此外，PL激发光谱显示，除了直接激发Eu离子的396 nm激发带外，SrIn2O4主体晶格还实现了有效的能量转移，使该材料成为固态白灯应用的优秀候选材料。
Red-emitting phosphor powders of SrIn2O4 activated with Eu3+ ions were fabricated by high pressure assisted combustion synthesis. X-ray diffraction analysis of these oxide phosphors revealed the formation of single-phase orthorhombic SrIn2O4 for concentrations up to 4 at% Eu. A detailed photoluminescence (PL) and cathodoluminescence study showed bright red emission originated within the 5 D0 → 7FJ intra-shell transitions of Eu3+. Furthermore, PL excitation spectroscopy revealed that an efficient energy transfer from the SrIn2O4 host lattice onto the Eu ions is accomplished in addition to the excitation band peaked at 396 nm that directly excites the Eu ions, making this material an excellent candidate for applications in solid state white lamps.