title: Highly Efficient Perovskite-Quantum-Dot Light-Emitting Diodes by Surface Engineering.
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.
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Jun
authors.initials: J
authors.lastname: Pan
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.|Department of Chemistry and Nano Science, Ewha Woman's University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Korea.
authors.forename: Li Na
authors.initials: LN
authors.lastname: Quan
authors.affiliation: Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, Ontario, M5S 3E4, Canada.
authors.forename: Yongbiao
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Wei
authors.initials: W
authors.lastname: Peng
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Banavoth
authors.initials: B
authors.lastname: Murali
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Smritakshi P
authors.initials: SP
authors.lastname: Sarmah
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.
authors.forename: Mingjian
authors.initials: M
authors.lastname: Yuan
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Lutfan
authors.initials: L
authors.lastname: Sinatra
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Noktan M
authors.initials: NM
authors.lastname: Alyami
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Jiakai
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.
authors.forename: Emre
authors.initials: E
authors.lastname: Yassitepe
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.
authors.forename: Oleksandr
authors.initials: O
authors.lastname: Voznyy
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Comin
authors.affiliation: Imaging and Characterization Laboratory, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Mohamed N
authors.initials: MN
authors.lastname: Hedhili
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
authors.forename: Omar F
authors.initials: OF
authors.lastname: Mohammed
authors.affiliation: Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, Ontario, M5S 3E4, Canada.
authors.forename: Zheng Hong
authors.initials: ZH
authors.lastname: Lu
authors.affiliation: Department of Chemistry and Nano Science, Ewha Woman's University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Korea.
authors.forename: Dong Ha
authors.initials: DH
authors.lastname: Kim
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada. ted.sargent@utoronto.ca.
authors.forename: Edward H
authors.initials: EH
authors.lastname: Sargent
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia. osman.bakr@kaust.edu.sa.
authors.forename: Osman M
authors.initials: OM
authors.lastname: Bakr
keywords: CsPbBr3; external quantum efficiency; light-emitting diodes; perovskite; quantum dots