Highly Efficient Perovskite‐Quantum‐Dot Light‐Emitting Diodes by Surface Engineering
Advanced Materials2016Vol. 28(39), pp. 8718–8725
Citations Over TimeTop 1% of 2016 papers
Jun Pan, Li Na Quan, Yongbiao Zhao, Wei Peng, Banavoth Murali, Smritakshi P. Sarmah, Mingjian Yuan, Lutfan Sinatra, Noktan M. AlYami, Jiakai Liu, Emre Yassitepe, Zhenyu Yang, Oleksandr Voznyy, Riccardo Comin, Mohamed Nejib Hedhili, Omar F. Mohammed, Zheng‐Hong Lu, Dong Ha Kim, Edward H. Sargent, Osman M. Bakr
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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