Abstract
Perovskites are gaining attention as next-generation materials across various fields due to their exceptional physical, electrical, and optical properties. Perovskite light-emitting diodes (PeLEDs), in particular, have achieved external quantum efficiencies (EQE) exceeding 30% with ongoing enhancements. However, inorganic PeLEDs, despite their durability, face efficiency challenges compared to their organic counterparts. This is primarily due to energy level misalignment and defects at interfaces or surfaces adjacent to the perovskite emitting layer and charge transport layers. Addressing these challenges, our research focuses on defect passivation as a key strategy for improving efficiency. We demonstrate significant efficiency enhancements in inorganic PeLEDs through the targeted introduction of organic molecules to passivate defects at the perovskite/hole transporting layer (HTL) interface and the emitting layer's surface, providing a promising avenue for advancing the field.
Published Version
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