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dc.contributor.authorSun, Haizhu
dc.contributor.authorYang, Zhenyu
dc.contributor.authorWei, Mingyang
dc.contributor.authorSun, Wei
dc.contributor.authorLi, Xiyan
dc.contributor.authorYe, Shuyang
dc.contributor.authorZhao, Yongbiao
dc.contributor.authorTan, Hairen
dc.contributor.authorKynaston, Emily L.
dc.contributor.authorSchon, Tyler B.
dc.contributor.authorYan, Han
dc.contributor.authorLu, Zheng-Hong
dc.contributor.authorOzin, Geoffrey A.
dc.contributor.authorSargent, Edward H.
dc.contributor.authorSeferos, Dwight S.
dc.date.accessioned2017-10-04T14:59:16Z
dc.date.available2017-10-04T14:59:16Z
dc.date.issued2017-07-10
dc.identifier.citationSun H, Yang Z, Wei M, Sun W, Li X, et al. (2017) Chemically Addressable Perovskite Nanocrystals for Light-Emitting Applications. Advanced Materials 29: 1701153. Available: http://dx.doi.org/10.1002/adma.201701153.
dc.identifier.issn0935-9648
dc.identifier.doi10.1002/adma.201701153
dc.identifier.urihttp://hdl.handle.net/10754/625785
dc.description.abstractWhereas organic–inorganic hybrid perovskite nanocrystals (PNCs) have remarkable potential in the development of optoelectronic materials, their relatively poor chemical and colloidal stability undermines their performance in optoelectronic devices. Herein, this issue is addressed by passivating PNCs with a class of chemically addressable ligands. The robust ligands effectively protect the PNC surfaces, enhance PNC solution processability, and can be chemically addressed by thermally induced crosslinking or radical-induced polymerization. This thin polymer shield further enhances the photoluminescence quantum yields by removing surface trap states. Crosslinked methylammonium lead bromide (MAPbBr3) PNCs are applied as active materials to build light-emitting diodes that have low turn-on voltages and achieve a record luminance of over 7000 cd m−2, around threefold better than previous reported MA-based PNC devices. These results indicate the great potential of this ligand passivation approach for long lifespan, highly efficient PNC light emitters.
dc.description.sponsorshipH.S. and Z.Y. contributed equally to this work. This work was supported by the Ontario Research Fund Research Excellence Program, the Natural Sciences and Engineering Research Council (NSERC) of Canada, the Canadian Foundation for Innovation, DuPont, an award (KUS-11-009-21) from the King Abdullah University of Science and Technology (KAUST), and the A. P. Sloan Foundation. H.S. acknowledges the support of National Natural Science Foundation of China (NSFC) (21574018 and 51433003) and China Scholarship Council (CSC). W.S. and G.A.O. acknowledge the support of Connaught Innovation Fund and Connaught Global Challenge Fund. H.T. acknowledges the Netherlands Organisation for Scientific Research (NWO) for a Rubicon grant (680-50-1511) to support his postdoctoral research at University of Toronto. The authors appreciate the valuable suggestions of N. Coombs and I. Gourevich for the TEM and HRTEM measurement. The authors thank Dr. F. Fan, Dr. M. Liu, Dr. L. Levina, E. Palmiano, and D. Kopilovic for their help during the course of the study.
dc.publisherWiley-Blackwell
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/adma.201701153/full
dc.subjectcrosslinking reaction
dc.subjectdouble bond modification
dc.subjectlight-emitting diodes
dc.subjectnanocrystals
dc.subjectperovskites
dc.subjectwater resistant
dc.titleChemically Addressable Perovskite Nanocrystals for Light-Emitting Applications
dc.typeArticle
dc.identifier.journalAdvanced Materials
dc.contributor.institutionCollege of Chemistry; National & Local United Engineering Laboratory for Power Batteries; Northeast Normal University; 5268, Renmin Street Changchun 130024 P. R. China
dc.contributor.institutionDepartment of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
dc.contributor.institutionThe Edward S. Rogers Department of Electrical and Computer Engineering; University of Toronto; 10 King's College Road Toronto Ontario M5S 3G4 Canada
dc.contributor.institutionDepartment of Materials Science and Engineering; University of Toronto; 184 College Street Toronto Ontario M5S 3E4 Canada
kaust.grant.numberKUS-11-009-21


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