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Perovskite-molecule composite thin films for efficient and stable light-emitting diodes

Wang, Heyong (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
Kosasih, Felix Utama (author)
Univ Cambridge, England
Yu, Hongling (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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Zheng, Guanhaojie (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
Zhang, Jiangbin (author)
Univ Cambridge, England
Pozina, Galia (author)
Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
Liu, Yang (author)
Zhejiang Univ, Peoples R China
Bao, Chunxiong (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
Hu, Zhang-Jun (author)
Linköpings universitet,Molekylär ytfysik och nanovetenskap,Tekniska fakulteten
Liu, Xianjie (author)
Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
Kobera, Libor (author)
Czech Acad Sci, Czech Republic
Abbrent, Sabina (author)
Czech Acad Sci, Czech Republic
Brus, Jiri (author)
Czech Acad Sci, Czech Republic
Jin, Yizheng (author)
Zhejiang Univ, Peoples R China
Fahlman, Mats (author)
Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
Friend, Richard H. (author)
Univ Cambridge, England
Ducati, Caterina (author)
Univ Cambridge, England
Liu, Xiaoke (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
Gao, Feng (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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 (creator_code:org_t)
2020-02-14
2020
English.
In: Nature Communications. - : NATURE PUBLISHING GROUP. - 2041-1723. ; 11:1
Related links:
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https://www.nature.c...
https://urn.kb.se/re...
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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.

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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ref (subject category)
art (subject category)

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