Developing effective design principle in crystalline materials for superior optical properties remains a critical challenge. Herein, we establish the cationic ordering strategy to build rigid framework and significantly improve phosphor performance. As a proof of concept, the NaHfY(PO):Eu (x = 0.05–0.2) phosphor series is constructed, which possesses absolutely cationic ordered structure and the linked outstanding photoluminescent properties. Structurally, heterovalent substitution in the lattice maintains the single-site occupancy of Na ions in NaHfY(PO):Eu, as confirmed by Rietveld refinements and NMR spectroscopy. This cationic arrangement keeps the cation/vacancy ordered distribution that ensures high structural rigidity, with Debye temperature, as the indicator of rigidity, extracted from low temperature heat capacities exceeding 379 K. The resultant high structural rigidity, coupled with intrinsic defects, induces zero-thermal-quenching luminescence up to 150 °C. Moreover, the substitution of Y at Hf site facilitates effective Eu to Eu reduction, making them excellent cyan emitters with quantum efficiency exceeding 90 % and intense violet absorption. This work provides an impetus for the discovery of the currently state-of-the-art cyan phosphors for practical applications and gives insight into the structural factors influencing luminescent properties.

中文翻译：

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操纵阳离子排序以实现高效和零热猝灭青色光致发光

开发晶体材料的有效设计原理以实现卓越的光学性能仍然是一个严峻的挑战。在此，我们建立了阳离子排序策略来构建刚性框架并显着提高荧光粉性能。作为概念验证，构建了 NaHfY(PO):Eu (x = 0.05–0.2) 荧光粉系列，该系列荧光粉具有绝对阳离子有序结构和相关的出色光致发光性能。在结构上，晶格中的异价取代维持了 NaHfY(PO):Eu 中 Na 离子的单位占据，Rietveld 精修和 NMR 光谱证实了这一点。这种阳离子排列保持了阳离子/空位有序分布，确保了高结构刚性，以德拜温度作为刚性指标，从超过 379 K 的低温热容中提取。由此产生的高结构刚性，加上固有缺陷，导致零-热猝灭发光高达 150 °C。此外，Hf 位点上 Y 的取代促进了 Eu 到 Eu 的有效还原，使其成为量子效率超过 90% 并具有强烈​​紫光吸收的优异青色发射体。这项工作为发现当前最先进的青色荧光粉的实际应用提供了动力，并深入了解影响发光性能的结构因素。