Perovskite nanocrystals passivated by aromatic phosphonic acid for high-performance light-emitting diodes

Here the authors presented BPA-passivated FAPbBr 3 NCs. The presence of –PO groups in the BPA plays a critical role in preventing superoxide formation, resulting in high-performance LEDs with an efficiency of 12.9% and a luminance of 29 280 cd m −2 .