Energy Manipulation in Lanthanide‐Doped Core–Shell Nanoparticles for Tunable Dual‐Mode Luminescence toward Advanced Anti‐Counterfeiting

Developing advanced luminescent materials and techniques is of significant importance for anti‐counterfeiting applications, and remains a huge challenge. In this work, a new and efficient approach for achieving efficient dual‐mode luminescence with tunable color outputs via Gd 3+ ‐mediated interfacial energy transfer, Ce 3+ ‐assisted cross‐relaxation, and core–shell nanostructuring strategy is reported. The introduction of Ce 3+ into the inner...