Highly Efficient Perovskite-Quantum-Dot Light-Emitting Diodes by Surface Engineering

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...

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Published inAdvanced materials (Weinheim) Vol. 28; no. 39; pp. 8718 - 8725
Main Authors Pan, Jun, Quan, Li Na, Zhao, Yongbiao, Peng, Wei, Murali, Banavoth, Sarmah, Smritakshi P., Yuan, Mingjian, Sinatra, Lutfan, Alyami, Noktan M., Liu, Jiakai, Yassitepe, Emre, Yang, Zhenyu, Voznyy, Oleksandr, Comin, Riccardo, Hedhili, Mohamed N., Mohammed, Omar F., Lu, Zheng Hong, Kim, Dong Ha, Sargent, Edward H., Bakr, Osman M.
Format Journal Article
LanguageEnglish
Published Germany Blackwell Publishing Ltd 01.10.2016
Subjects
Chains
CsPbBr3
external quantum efficiency
Ligands
Light-emitting diodes
perovskite
Perovskites
Quantum dots
Quantum efficiency
Strategy
quantum dots
CsPbBr3
external quantum efficiency
perovskite
light-emitting diodes
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Summary: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.
Bibliography:istex:4EE090E493545AC28072AE5B1B5AA2E465AD1A23
National Research Foundation of Korea - No. 2014R1A2A1A09005656
ArticleID:ADMA201600784
ark:/67375/WNG-KVKG43R6-Z
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201600784