Perspective Phosphine oxide additives for perovskite diodes and solar cells

Lead halide perovskites have been considered promising semicon-ducting materials for next-generation optoelectronic devices due to their solution processability and excellent optoelectronic proper-ties. Device performance of perovskite light-emitting diodes (PeLEDs) and perovskite solar cells (PSCs) has been rapidly devel-oped during the past decade. Very recently, organic molecules containing phosphine oxide groups have emerged as promising ad-ditives and passivators to improve the device performance and sta-bility of both PeLEDs and PSCs. In this perspective, we summarize recent progress in the development of new phosphine-oxide-based additives for PeLEDs and PSCs. The passivation mechanism, molecule design principle, and structure-property relationship of phosphine oxide molecules for PeLEDs and PSCs are systematically discussed and analyzed. Finally, we provide an outlook on the mo-lecular design of novel phosphine oxide compounds for efficient and stable PeLEDs and PSCs in the future.

Automated summary

This article summarizes the recent progress in using organic molecules containing phosphine oxide groups as additives and passivators to improve the performance and stability of lead halide perovskite optoelectronic devices. The passivation mechanism, molecule design principle, and structure-property relationship of phosphine oxide molecules for perovskite light-emitting diodes and perovskite solar cells are systematically discussed and analyzed. Finally, an outlook on the molecular design of novel phosphine oxide compounds for efficient and stable perovskite light-emitting diodes and perovskite solar cells in the future is provided.