Acting as the electron trap, oxygen vacancies can strongly influence the long persistent luminescence (LPL) properties were verified in Ca₂Ga₂GeO₇: Zn²⁺ (CGGZ) phosphor. The existence of oxygen vacancies in this self‐excitation material was confirmed by a simple fluorescence probe method. The introduction of zinc ions promotes the generation of oxygen vacancies, as well as optimizes its LPL properties. Thermoluminescence (TL) analysis revealed that electrons in deep trap will effectively transfer to the shallow one via the bridge of interstitial zinc. Accordingly, a mechanism for PL and LPL in this Gallogermanates was provided.

中文翻译：

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氧空位在持久磷光体Ca2Ga2GeO7：Zn2 +中的作用

在Ca ₂ Ga ₂ GeO ₇：Zn ²⁺（CGGZ）荧光粉中，氧空位充当电子陷阱，可以强烈影响长时间持续发光（LPL）特性。通过一种简单的荧光探针法证实了这种自激材料中氧空位的存在。锌离子的引入促进了氧空位的产生，并优化了其LPL性能。热致发光（TL）分析表明，深陷阱中的电子将通过间隙锌桥有效地转移到浅层电子。因此，提供了在该高洛酸酯中用于PL和LPL的机制。