Solar Cells & Photonics Research Laboratory

School of Chemistry
University of Hyderabad, Hyderabad, India

Highly Effi cient Perovskite-Quantum-Dot Light-Emitting Diodes by Surface Engineering

Authors: Jun Pan, Banavoth Murali, Li Na Quan, Yongbiao Zhao, Wei Peng, Smritakshi P Sarmah, Mingjian Yuan, Lutfan Sinatra, Noktan M Alyami, Jiakai Liu, Emre Yassitepe, Zhenyu Yang, Oleksandr Voznyy, Riccardo Comin, Moh

Keywords: quantum dot, light emitting diodes, ligand excange strategy

Year: 2016/10/1​​

Abstract: A two-step ligand-exchange strategy is developed, in which the long-carbon- chain ligands on all-inorganic perovskite (CsPbX3, X = Br, Cl) quantum dots (QDs) are replaced with halide-ion-pair ligands. Green and blue light-emitting diodes made from the halide-ion-pair-capped quantum dots exhibit high external quantum efficiencies compared with the untreated QDs.​​


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