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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Preparation and its luminescent properties of AlPO_4:Eu~(3+) phosphor for w-LED applications
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Preparation and its luminescent properties of AlPO_4:Eu~(3+) phosphor for w-LED applications

机译：用于w-LED的AlPO_4：Eu〜（3+）荧光粉的制备及其发光性能

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摘要

Orange-reddish-emitting phosphor AlPO_4:Eu~(3+) were fabricated by solid-state reactions at high temperature. X-ray diffraction analysis revealed that AlPO_4 doped with 3mol% of Eu~(3+) (AlPO_4:0.03Eu~(3+)) was pure orthorhombic phase. The photoluminescence study shows that the intensity of magnetic dipole transition (~5D_0 -> ~7F_1) at 594 nm dominates over that of electric dipole transition (~5D_0 -> ~7F_2) at 613 nm. The optimum concentration of Eu~(3+) for the highest luminescence is found to be 3 mol%. The PL excitation spectrum is composed of CTB of Eu-0 and excitation lines of Eu~(3+) ions. The strongest excitation lines appeared at 392 nm. The color coordinates, quantum yield and lifetime for AlPO_4:0.03Eu~(3+) were measured. All the spectrum features indicate that AlPO_4:Eu~(3+) might be a promising phosphor for display devices or w-LEDs.
机译：通过高温固相反应制备了橙红色发光的荧光粉AlPO_4：Eu〜（3+）。 X射线衍射分析表明，掺杂3mol％Eu〜（3+）（AlPO_4：0.03Eu〜（3+））的AlPO_4为纯正交相。光致发光研究表明，在594 nm处的磁偶极跃迁强度（〜5D_0->〜7F_1）大于在613 nm处的电偶极跃迁强度（〜5D_0->〜7F_2）。发现最高发光的Eu〜（3+）的最佳浓度为3mol％。 PL激发光谱由Eu-0的CTB和Eu〜（3+）离子的激发线组成。最强的激发线出现在392 nm。测量了AlPO_4：0.03Eu〜（3+）的色坐标，量子产率和寿命。所有光谱特征表明，AlPO_4：Eu〜（3+）可能是用于显示设备或w-LED的有前途的荧光粉。

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