Description

The introduction explains that perovskite light-emitting diodes (PeLEDs) are an emerging display and lighting technology based on metal halide perovskite materials. These devices have attracted significant attention because of their potential for high color purity, efficient light emission, low operating voltage, and relatively simple device structures.

The chapter introduces the unique properties of perovskite materials, including their adjustable optical characteristics, strong light absorption and emission capabilities, and tunable bandgaps. These features make them promising candidates for next-generation displays, flexible electronics, and advanced photonic devices.