White light-emitting diodes (WLEDs) is widely concerned as the next-generation source of displays and lighting on account of many advantages. In this work, Sm³⁺ ions were introduced into Ca₉Nd(PO₄)₇: Eu³⁺ (CNPO: Eu³⁺) red phosphors as a co-dopant to boost the blue-light excitation. X-ray diffraction (XRD) data confirm the successful preparation of the materials. Rietveld refinements were employed to investigate the site occupation and lattice parameter variation. All obtained materials have showed red emission under blue light or near-ultraviolet light excitation. The photoluminescence (PL) emission spectra features both signals from the two dopants, and the introduction of Sm³⁺ could effectively boost the red-light emission and blue-light excitation. Theoretical simulations help evidence the capability of the CNPO materials as host matrix of luminescent centers. Finally, a blue LED chip-based WLED was assembled in demonstration of their potential applications. Compared to the controlling device made with Eu³⁺ single-doped samples, the co-doped one has stronger blue light excitation and red light emission that guarantees a high luminous efficacy of over 90 lm W⁻¹. The device also shows a superb long-term stability under continuous working. All in all, the CNPO: Eu³⁺, Sm³⁺ phosphors have shown many promising aspects in blue chip-based WLED applications.

白光发光二极管 (WLED) 因其诸多优点而被广泛关注为下一代显示器和照明光源。在这项工作中，将 Sm ³⁺离子作为共掺杂剂引入 Ca ₉ Nd(PO ₄ ) ₇ : Eu ³⁺ (CNPO: Eu ³⁺ ) 红色荧光粉中以增强蓝光激发。X 射线衍射 (XRD) 数据证实了材料的成功制备。采用 Rietveld 细化来研究位点占用和晶格参数变化。所有获得的材料在蓝光或近紫外光激发下均显示出红色发射。光致发光 (PL) 发射光谱具有来自两种掺杂剂的信号和 Sm 的引入³⁺可以有效增强红光发射和蓝光激发。理论模拟有助于证明 CNPO 材料作为发光中心基质的能力。最后，组装了一个基于蓝色 LED 芯片的 WLED，以展示其潜在应用。与用Eu ³⁺单掺杂样品制成的控制装置相比，共掺杂的具有更强的蓝光激发和红光发射，保证了超过90 lm W ^-1的高发光效率。该设备在连续工作下也表现出极好的长期稳定性。总而言之，CNPO: Eu ³⁺、Sm ³⁺荧光粉在基于蓝光芯片的 WLED 应用中显示出许多有前景的方面。