Recent Advances in Performance Regulation Strategies of Perovskite Semiconductor Materials for High-Performance Light-Emitting Devices

Song Kai

Beijing Technology and Business University

Abstract：

Metal halide perovskite semiconductors have emerged as one of the most promising materials for high-performance light-emitting devices owing to their outstanding optoelectronic properties, tunable bandgaps, and low-cost solution-processability. However, perovskite light-emitting diodes (PeLEDs) still suffer from several critical challenges, including high defect densities, severe ion migration, and insufficient operational stability, which significantly hinder their practical applications. This review systematically summarizes recent advances in material performance regulation strategies for high-performance perovskite light-emitting devices, with particular emphasis on composition engineering, dimensional engineering, defect passivation, and interface engineering. The influences of these strategies on carrier recombination, luminescence efficiency, and device stability are comprehensively discussed. Finally, the current challenges and future development trends are highlighted, aiming to provide valuable insights into the rational design and practical implementation of highly efficient and stable perovskite light-emitting devices.

Key Words：

metal halide perovskite; Perovskite Light-Emitting Diode (PeLED); performance regulation; defect passivation; interface engineering