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Perovskite-molecule composite thin films for efficient and stable light-emitting diodes
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SYSNO ASEP 0522449 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Perovskite-molecule composite thin films for efficient and stable light-emitting diodes Author(s) Wang, H. (SE)
Kosasih, F. U. (GB)
Yu, H. (SE)
Zheng, G. (SE)
Zhang, J. (GB)
Pozina, G. (SE)
Liu, Y. (CN)
Bao, C. (SE)
Hu, Z. (SE)
Liu, X. (SE)
Kobera, Libor (UMCH-V) RID, ORCID
Abbrent, Sabina (UMCH-V) RID, ORCID
Brus, Jiří (UMCH-V) RID, ORCID
Jin, Y. (CN)
Fahlman, M. (SE)
Friend, R. H. (GB)
Ducati, C. (GB)
Liu, X.-K. (SE)
Gao, F. (SE)Article number 891 Source Title Nature Communications. - : Nature Publishing Group
Roč. 11, č. 1 (2020), s. 1-9Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords bioimaging ; cathodoluminescence ; LuAG Subject RIV CD - Macromolecular Chemistry OECD category Polymer science Method of publishing Open access Institutional support UMCH-V - RVO:61389013 UT WOS 000558874500001 EID SCOPUS 85079361327 DOI 10.1038/s41467-020-14747-6 Annotation 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. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://www.nature.com/articles/s41467-020-14747-6
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