Adjusting the elemental composition of a host is regarded to be an effective strategy to tune its luminescent properties such as peak energy, emission efficiency, and bandwidth. In this work, the cation substitution of (Ba²⁺ → Sr²⁺) in self‐activated Sr₆V₂O₁₁ was conducted to investigate the luminescence modification. All the phosphors of Sr_6‐6xBa_6xV₂O₁₁ (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) were synthesized by the traditional chemical sol‐gel method. The morphological properties were measured through scanning electron microscope and energy dispersive spectrum measurements. The cation substitution brings out the disorder in the structure, which exerts modifications on the luminescence properties of Sr₆V₂O₁₁. The luminescence intensity and corresponding decay lifetime were enhanced with the cation disorder in the self‐activated phosphor. Cation disorder in a phosphor lattice could be one of the effective approaches to improve the luminescence efficiency.

中文翻译：

---

Sr6V2O11中引入的阳离子紊乱引起的自激活发光的改善

调节基质的元素组成被认为是调节其发光特性（例如峰值能量，发射效率和带宽）的有效策略。在这项工作中，对自活化Sr ₆ V ₂ O ₁₁中的（Ba 2 ⁺  →Sr ²⁺）进行了阳离子取代，以研究其发光修饰。Sr _{6-6 x} Ba _{6 x} V ₂ O ₁₁（x  = 0、0.1、0.2、0.3、0.4、0.5）是通过传统的化学溶胶凝胶法合成的。通过扫描电子显微镜和能量色散光谱测量来测量形态学性能。阳离子取代使结构紊乱，从而改变了Sr ₆ V ₂ O ₁₁的发光特性。自活化磷光体中的阳离子紊乱增强了发光强度和相应的衰变寿命。磷晶格中的阳离子无序可能是提高发光效率的有效方法之一。