A group of white light‐emitting phosphors SrBi2Nb2O9:xDy3+ (SBN:xDy3+) are prepared by high‐temperature solid reaction. The crystal phase, morphology, and photoluminescence (PL) characteristics of the prepared SBN:xDy3+ are analyzed. The X‐ray diffraction results prove that the synthesized samples are pure phase, in which the shift of the main peak depicted that crystal interplanar distance decreases after Dy3+ replacing Bi3+. The scanning electron microscope results show that the average crystal size of the sample is ≈1–10 μm. Energy dispersive X‐ray spectroscopy shows that the ratio of element composition of the SBN:xDy3+ is similar to the theoretical calculation. The PL excitation illustrates the excitation peaks mainly exist at 389, 399, 426, and 450 nm due to the transitions of Dy3+. For PL, the emission peaks of samples with different doping concentrations are centered at 479 and 573 nm. The ratio of yellow intensity to blue intensity indicates that Dy3+ is located at a high symmetry site, which has the possibility to produce suitable white light. The Commission Internationale de l’Eclairage coordinates of the SBN:xDy3+ are located near the standard white light coordinate. All these results prove that SrBi2Nb2O9:xDy3+ can be a potential material in the white light application.

中文翻译：

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新型单相白光荧光粉SrBi2Nb2O9:Dy3+的结构和光致发光特性

一组白光荧光粉SrBi2铌2氧9：X镝3+（国家编号：X镝3+）是通过高温固相反应制备的。制备的SBN的晶相、形貌和光致发光（PL）特性：X镝3+进行分析。 X射线衍射结果证明合成的样品为纯相，其中主峰的移动表明Dy后晶体晶面距离减小。3+取代Bi3+。扫描电镜结果表明样品的平均晶体尺寸约为1~10 μm。能量色散X射线光谱表明SBN的元素组成比：X镝3+与理论计算类似。 PL 激发表明，由于 Dy 的跃迁，激发峰主要存在于 389、399、426 和 450 nm 处3+。对于PL，不同掺杂浓度的样品的发射峰集中在479和573 nm处。黄色强度与蓝色强度之比表明 Dy3+位于高对称性位置，有可能产生合适的白光。 SBN 的国际照明委员会坐标：X镝3+位于标准白光坐标附近。所有这些结果都证明SrBi2铌2氧9：X镝3+可以成为白光应用中的潜在材料。