In this work, we developed Ln³⁺(Eu³⁺/Tb³⁺)-hybridized fluorescent sands with self-cleaning properties for outdoor photonic indicators (OPIs). To introduce Ln³⁺(Eu³⁺/Tb³⁺)-induced fluorescence sand-surfaces with superhydrophobic properties, Ln³⁺ complexes (EuC/TbC) were anchored to sand@SiO₂ particulates for the formation of sand@SiO₂@LnC@PFDS. The emission spectra were measured at 365/345 nm for sand@SiO₂@EuC@PFDS and sand@SiO₂@TbC@PFDS. Sand@SiO₂@LnC@PFDS indicated highly bright red and green emission with a long fluorescence lifetime. CIE color data were used to evaluate the high color purity of the red/green emissions under ultraviolet excitation light. More importantly, fluorescent sand particulates with self-cleaning properties can prevent intense photonic signals from being polluted by dust, ice, humidity, and rainwater which can be applied to construct signaling indicators for emergency rescue work and natural disaster sites.

在这项工作中，我们开发了具有自清洁性能的Ln ³⁺ (Eu ³⁺ /Tb ³⁺ )-杂化荧光砂，用于户外光子指示剂 (OPI)。为了引入具有超疏水特性的Ln ³⁺ (Eu ³⁺ /Tb ³⁺ ) 诱导荧光​​砂表面，将 Ln ³⁺配合物 (EuC/TbC) 锚定到砂@SiO ₂颗粒上以形成砂@SiO ₂ @ LnC@PFDS。在 365/345 nm 处测量了沙子@SiO ₂ @EuC@PFDS 和沙子@SiO ₂ @TbC@PFDS的发射光谱。砂@SiO ₂@LnC@PFDS 表明具有长荧光寿命的高亮红色和绿色发射。CIE 颜色数据用于评估紫外激发光下红色/绿色发射的高色纯度。更重要的是，具有自清洁特性的荧光砂颗粒可以防止强烈的光子信号被灰尘、冰、湿气和雨水污染，可用于构建应急救援工作和自然灾害现场的信号指示器。