Flexible perovskite light‐emitting diodes: A comprehensive review of emission control strategies for enhanced performance

Abstract Perovskite light‐emitting diodes (PeLEDs) have emerged as promising candidates for next‐generation photonics, owing to their exceptional optoelectronic properties and scalable fabrication processes, particularly for flexible wearable electronics, intelligent lighting systems, and ultra‐high‐definition displays. This review comprehensively examines recent advancements in perovskite materials, device architectures, operational mechanisms, and optimization strategies for the functional layers of PeLEDs. Despite significant progress, the practical deployment of high‐performance flexible PeLEDs (FPeLEDs) faces three major challenges: efficiency droop at high current densities, limited light extraction efficiency, and thermal management issues during operation. Future research efforts should focus on tackling these obstacles to improve the overall performance and reliability of FPeLEDs. This systematic overview aims to provide valuable insights and guidance for the development of FPeLED technology and its applications in emerging fields. image