Perovskite-molecule composite thin films for efficient and stable light-emitting diodes.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
14 Feb 2020
14 Feb 2020
Historique:
received:
20
07
2019
accepted:
30
01
2020
entrez:
16
2
2020
pubmed:
16
2
2020
medline:
16
2
2020
Statut:
epublish
Résumé
Although perovskite light-emitting diodes (PeLEDs) have recently experienced significant progress, there are only scattered reports of PeLEDs with both high efficiency and long operational stability, calling for additional strategies to address this challenge. Here, we develop perovskite-molecule composite thin films for efficient and stable PeLEDs. The perovskite-molecule composite thin films consist of in-situ formed high-quality perovskite nanocrystals embedded in the electron-transport molecular matrix, which controls nucleation process of perovskites, leading to PeLEDs with a peak external quantum efficiency of 17.3% and half-lifetime of approximately 100 h. In addition, we find that the device degradation mechanism at high driving voltages is different from that at low driving voltages. This work provides an effective strategy and deep understanding for achieving efficient and stable PeLEDs from both material and device perspectives.
Identifiants
pubmed: 32060279
doi: 10.1038/s41467-020-14747-6
pii: 10.1038/s41467-020-14747-6
pmc: PMC7021679
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
891Subventions
Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
ID : 717026
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