Bridging Synthesis and Device Performance in Perovskite Quantum Dot Light‐Emitting Diodes

Abstract

ABSTRACT Perovskite quantum dots (PQDs) have emerged as promising emitters for next‐generation light‐emitting diodes (LEDs), owing to their exceptional color purity, tunable bandgaps, and high photoluminescence quantum yields (PLQYs). This review provides a comprehensive and insightful overview of the recent advances in PQD‐LEDs, with particular emphasis on the fundamental correlations between material synthesis, surface chemistry, and device engineering. We systematically examine the integrated “synthesis–surface–device” optimization framework, discussing advanced synthetic strategies, compositional and surface engineering for defect suppression and stability enhancement, and device‐level approaches to improve charge balance, radiative recombination, light outcoupling, and operational stability. By bridging foundational knowledge with material innovations and device design, this work offers a clear roadmap and step‐by‐step guidance for developing high‐performance PQD‐LEDs.