In this work, we present a facile preparation approach of Au nanoparticles embedded LaPO₄:Eu³⁺ inverse opal photonic crystals. In the typical preparation process, the transparent LaPO₄:Eu³⁺ sol including HAuCI₄ was infiltrated into the opal templates. After the sintering, the 10‐20 nm Au nanoparticles were formed in the interior of nano‐sized wall of LaPO₄:Eu³⁺ inverse opal and the Au nanoparticles embedded LaPO₄:Eu³⁺ inverse opals were obtained. The luminescence of Au nanoparticles embedded LaPO₄:Eu³⁺ inverse opal was investigated. The emission peaks located at the 593 (⁵D₀→⁷F₁), 618 (⁵D₀→⁷F₂) and 698 nm (⁵D₀→⁷F₄) from Eu³⁺ ions were observed. The 593, 618, and 698 nm emissions of Au nanoparticles embedded LaPO₄:Eu³⁺ inverse opals were enhanced in contrast to these of LaPO₄:Eu³⁺ inverse opal without the Au nanoparticles, which is from the excitation field enhancement caused by the localized surface plasmon resonance of Au nanoparticles.

中文翻译：

---

Au纳米粒子包埋LaPO4：Eu3 +反蛋白石的制备及光致发光增强

在这项工作中，我们提出了一种简便的金纳米粒子嵌入LaPO ₄：Eu ³⁺反蛋白石光子晶体制备方法。在典型的制备过程中，将包括HAuCI ₄的透明LaPO ₄：Eu ³⁺溶胶渗透到蛋白石模板中。烧结后，在LaPO ₄：Eu ³⁺反蛋白石的纳米尺寸壁的内部形成10-20 nm的Au纳米颗粒，并获得了嵌入LaPO ₄：Eu ³⁺反蛋白石的Au纳米颗粒。嵌入LaPO ₄：Eu ³⁺的Au纳米粒子的发光反蛋白石进行了调查。从Eu ³⁺离子观察到发射峰位于593（⁵ D ₀ → ⁷ F ₁），618（⁵ D ₀ → ⁷ F ₂）和698 nm（⁵ D ₀ → ⁷ F ₄）处。Au构成的593，618和698纳米的纳米颗粒的排放嵌入LAPO ₄：Eu的³⁺反蛋白石是在相对于这些LAPO的增强₄：Eu的³⁺ 不含Au纳米粒子的反蛋白石，这是由于Au纳米粒子的局部表面等离子体激元共振引起的激发场增强。