File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Simultaneous Low-Order Phase Suppression and Defect Passivation for Efficient and Stable Blue Light-Emitting Diodes

TitleSimultaneous Low-Order Phase Suppression and Defect Passivation for Efficient and Stable Blue Light-Emitting Diodes
Authors
Issue Date2020
PublisherAmerican Chemical Society. The Journal's web site is located at https://pubs.acs.org/journal/aelccp
Citation
ACS Energy Letters, 2020, v. 5 n. 8, p. 2569-2579 How to Cite?
AbstractQuasi-two-dimensional (quasi-2D) perovskite is rising as a promising luminescent material for blue perovskite light-emitting diodes (PeLEDs). However, typical quasi-2D perovskites show a wide distribution of low-order phases and low efficiency owing to the inefficient energy transfer. Meanwhile, the defects and traps generated during the perovskite crystallization increase nonradiative recombination, further aggravating the external quantum efficiency (EQE). Herein, we demonstrate a unique quasi-2D perovskite with low-order phase suppression and defect passivation for efficient energy transfer and light emission by incorporating a 2D perovskite and an excess ammonium salt into the quasi-2D perovskite solution. By optimizing the new class of quasi-2D perovskite, we achieve blue PeLEDs with the brightness of 1765 cd m–2, EQE of 7.51%, low turn-on voltage of 3.07 V, and long operation lifetime of 3961 s under constant driving current without any shift of the electroluminescence spectra. The work contributes to promoting efficient and stable blue PeLEDs.
Persistent Identifierhttp://hdl.handle.net/10722/305347
ISSN
2020 Impact Factor: 23.101
2020 SCImago Journal Rankings: 8.632

 

DC FieldValueLanguage
dc.contributor.authorRen, Z-
dc.contributor.authorLI, L-
dc.contributor.authorYU, J-
dc.contributor.authorMA, R-
dc.contributor.authorXIAO, X-
dc.contributor.authorCHEN, R-
dc.contributor.authorWANG, K-
dc.contributor.authorSUN, XW-
dc.contributor.authorYIN, WJ-
dc.contributor.authorChoy, WCH-
dc.date.accessioned2021-10-20T10:08:08Z-
dc.date.available2021-10-20T10:08:08Z-
dc.date.issued2020-
dc.identifier.citationACS Energy Letters, 2020, v. 5 n. 8, p. 2569-2579-
dc.identifier.issn2380-8195-
dc.identifier.urihttp://hdl.handle.net/10722/305347-
dc.description.abstractQuasi-two-dimensional (quasi-2D) perovskite is rising as a promising luminescent material for blue perovskite light-emitting diodes (PeLEDs). However, typical quasi-2D perovskites show a wide distribution of low-order phases and low efficiency owing to the inefficient energy transfer. Meanwhile, the defects and traps generated during the perovskite crystallization increase nonradiative recombination, further aggravating the external quantum efficiency (EQE). Herein, we demonstrate a unique quasi-2D perovskite with low-order phase suppression and defect passivation for efficient energy transfer and light emission by incorporating a 2D perovskite and an excess ammonium salt into the quasi-2D perovskite solution. By optimizing the new class of quasi-2D perovskite, we achieve blue PeLEDs with the brightness of 1765 cd m–2, EQE of 7.51%, low turn-on voltage of 3.07 V, and long operation lifetime of 3961 s under constant driving current without any shift of the electroluminescence spectra. The work contributes to promoting efficient and stable blue PeLEDs.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at https://pubs.acs.org/journal/aelccp-
dc.relation.ispartofACS Energy Letters-
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.titleSimultaneous Low-Order Phase Suppression and Defect Passivation for Efficient and Stable Blue Light-Emitting Diodes-
dc.typeArticle-
dc.identifier.emailRen, Z: zhwren@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/acsenergylett.0c01015-
dc.identifier.scopuseid_2-s2.0-85090926815-
dc.identifier.hkuros327839-
dc.identifier.volume5-
dc.identifier.issue8-
dc.identifier.spage2569-
dc.identifier.epage2579-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats