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Article: All-Perovskite Emission Architecture for White Light-Emitting Diodes

TitleAll-Perovskite Emission Architecture for White Light-Emitting Diodes
Authors
Keywordswhite light-emitting diode
all-perovskite
2D perovskite
quantum dots
carrier transportation and distribution
Issue Date2018
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html
Citation
ACS Nano, 2018, v. 12 n. 10, p. 10486-10492 How to Cite?
AbstractWe demonstrate all-perovskite light-emitting diodes (PeLEDs) with white emission on the basis of simultaneously solving a couple of issues including the ion exchanges between different perovskites, solvent incompatibility in the solution process of stacking different perovskites and carrier transport layers, as well as the energy level matching between each layer in the whole device. The PeLEDs are built with a two-dimensional (CH3CH2CH2NH3)2CsPb2I7 perovskite that emits red light, CsPb(Br,Cl)3 quantum dots that emit a cyan color, and an interlayer composed of bis(1-phenyl-1H-benzo[d]imidazole)phenylphosphine oxide (BIPO) and poly(4-butylphenyl-diphenyl-amine) (Poly-TPD). The interlayer is designed to realize desirable white electroluminescence by tuning the electron and hole transportation and distribution in-between multilayers. With this PeLED configuration, we achieve the typical white light with chromaticity coordinates of (0.32, 0.32) in Commission Internationale de L’Eclairage (CIE) 1931 color space diagram and steady CIE coordinates in a wide range of driving current densities (from 2.94 to 59.29 mA/cm2). Consequently, our work, as the starting point for future research of all-perovskite white PeLEDs, will contribute to the future applications of PeLEDs in lighting and display. In addition, we believe that the proposed material and all-perovskite concept will leverage the design and development of more perovskite-based devices.
Persistent Identifierhttp://hdl.handle.net/10722/275002
ISSN
2017 Impact Factor: 13.709
2015 SCImago Journal Rankings: 7.120

 

DC FieldValueLanguage
dc.contributor.authorMao, J-
dc.contributor.authorLin, H-
dc.contributor.authorYe, F-
dc.contributor.authorQin, M-
dc.contributor.authorBurkhartsmeyer, JM-
dc.contributor.authorZhang, H-
dc.contributor.authorLu, X-
dc.contributor.authorWong, KS-
dc.contributor.authorChoy, WCH-
dc.date.accessioned2019-09-10T02:33:25Z-
dc.date.available2019-09-10T02:33:25Z-
dc.date.issued2018-
dc.identifier.citationACS Nano, 2018, v. 12 n. 10, p. 10486-10492-
dc.identifier.issn1936-0851-
dc.identifier.urihttp://hdl.handle.net/10722/275002-
dc.description.abstractWe demonstrate all-perovskite light-emitting diodes (PeLEDs) with white emission on the basis of simultaneously solving a couple of issues including the ion exchanges between different perovskites, solvent incompatibility in the solution process of stacking different perovskites and carrier transport layers, as well as the energy level matching between each layer in the whole device. The PeLEDs are built with a two-dimensional (CH3CH2CH2NH3)2CsPb2I7 perovskite that emits red light, CsPb(Br,Cl)3 quantum dots that emit a cyan color, and an interlayer composed of bis(1-phenyl-1H-benzo[d]imidazole)phenylphosphine oxide (BIPO) and poly(4-butylphenyl-diphenyl-amine) (Poly-TPD). The interlayer is designed to realize desirable white electroluminescence by tuning the electron and hole transportation and distribution in-between multilayers. With this PeLED configuration, we achieve the typical white light with chromaticity coordinates of (0.32, 0.32) in Commission Internationale de L’Eclairage (CIE) 1931 color space diagram and steady CIE coordinates in a wide range of driving current densities (from 2.94 to 59.29 mA/cm2). Consequently, our work, as the starting point for future research of all-perovskite white PeLEDs, will contribute to the future applications of PeLEDs in lighting and display. In addition, we believe that the proposed material and all-perovskite concept will leverage the design and development of more perovskite-based devices.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html-
dc.relation.ispartofACS Nano-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.subjectwhite light-emitting diode-
dc.subjectall-perovskite-
dc.subject2D perovskite-
dc.subjectquantum dots-
dc.subjectcarrier transportation and distribution-
dc.titleAll-Perovskite Emission Architecture for White Light-Emitting Diodes-
dc.typeArticle-
dc.identifier.emailYe, F: fayeyeh@hku.hk-
dc.identifier.emailChoy, WCH: chchoy@eee.hku.hk-
dc.identifier.authorityChoy, WCH=rp00218-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsnano.8b06196-
dc.identifier.pmid30222315-
dc.identifier.scopuseid_2-s2.0-85054901608-
dc.identifier.hkuros302834-
dc.identifier.volume12-
dc.identifier.issue10-
dc.identifier.spage10486-
dc.identifier.epage10492-
dc.publisher.placeUnited States-

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