<p>➀ Researchers have developed a novel method to enhance the efficiency of perovskite light-emitting diodes (PeLEDs) using polycaprolactone-silver nanoparticles (PCL@AgNPs-P) as an emission gain layer, improving luminance and external quantum efficiency (EQE).</p><p>➁ The innovation leverages Förster resonance energy transfer (FRET) and the Purcell effect, offering a cost-effective and scalable solution for high-performance PeLED applications.</p><p>➂ This breakthrough could accelerate advancements in high-performance displays, optical communication, laser optics, and quantum photonics, maintaining the purity and stability of the perovskite emissive layer while simplifying fabrication processes.</p>