Abstract
The cover image shows the ligand mediated anion exchange (LMAE) process from CsPbBr3 QDs to CsPbI3 QDs. The incorporation of N‐Acetyl‐L‐cysteine creates more halogen vacancies in CsPbBr3 QDs, which provides sufficient adsorption sites for I‐ ions, leading to the acceleration of anion exchange. Benefiting from the synergistic‐LMAE process, high PLQY of 97% and remarkable stability of CsPbI3 QDs are obtained. image
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