Organic additive engineering toward efficient perovskite light-emitting diodes

Abstract

Perovskite materials with excellent optical and electrical properties are promising for light-emitting diodes. In the field of perovskite light-emitting diodes (PeLEDs), organic materials additive engineering has been proved to be an effective scheme for enhancing efficiency and stability in PeLEDs. Most impressively, the reported external quantum efficiency of PeLEDs based on perovskite-organic composite has reached over 20%. Herein, we will review the important progress of the organic materials' additive-modified PeLEDs and discuss the remaining problems and challenges and the key research direction in the near future. (Figure presented.).