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Boosting Perovskite...
Boosting Perovskite Light-Emitting Diode Performance via Tailoring Interfacial Contact
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- Zou, Yatao (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Ban, Muyang (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Yang, Yingguo (författare)
- Chinese Acad Sci, Peoples R China
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- Bai, Sai (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Wu, Chen (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Han, Yujie (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Wu, Tian (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Tan, Yeshu (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Huang, Qi (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Gao, Xingyu (författare)
- Chinese Acad Sci, Peoples R China
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- Song, Tao (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Zhang, Qiao (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Sun, Baoquan (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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(creator_code:org_t)
- 2018-06-21
- 2018
- Engelska.
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Ingår i: ACS Applied Materials and Interfaces. - : AMER CHEMICAL SOC. - 1944-8244 .- 1944-8252. ; 10:28, s. 24320-24326
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Solution-processed perovskite light-emitting diodes (LEDs) have attracted wide attention in the past several years. However, the overall efficiency and stability of perovskite-based LEDs remain inferior to those of organic or quantum dot LEDs. Nonradiative charge recombination and the unbalanced charge injection are two critical factors that limit the device efficiency and operational stability of perovskite LEDs. Here, we develop a strategy to modify the interface between the hole transport layer and the perovskite emissive layer with an amphiphilic conjugated polymer of poly[(9,9-bis(3-(N,N-dimethylamino)propy1)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)] (PFN). We show evidences that PFN improves the quality of the perovskite film, which effectively suppresses nonradiative recombination. By further improving the charge injection balance rate, a green perovskite LED with a champion current efficiency of 45.2 cd/A, corresponding to an external quantum efficiency of 14.4%, is achieved. In addition, the device based on the PFN layer exhibits improved operational lifetime. Our work paves a facile way for the development of efficient and stable perovskite LEDs.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- perovskite; light-emitting diodes; charge carrier injection; high efficiency; stability
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- art (ämneskategori)
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- Av författaren/redakt...
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Zou, Yatao
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Ban, Muyang
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Yang, Yingguo
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Bai, Sai
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Wu, Chen
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Han, Yujie
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visa fler...
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Wu, Tian
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Tan, Yeshu
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Huang, Qi
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Gao, Xingyu
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Song, Tao
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Zhang, Qiao
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Sun, Baoquan
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visa färre...
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- NATURVETENSKAP
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ACS Applied Mate ...
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Linköpings universitet