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Highly Luminescent ...
Highly Luminescent and Stable CsPbI3 Perovskite Nanocrystals with Sodium Dodecyl Sulfate Ligand Passivation for Red-Light-Emitting Diodes
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- Zhang, Jibin (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten,Jinan Univ, Peoples R China; Huazhong Univ Sci & Technol, Peoples R China
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- Yin, Chunyang (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Yang, Fei (author)
- Huazhong Univ Sci & Technol, Peoples R China
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- Yao, Yuan (author)
- Huazhong Univ Sci & Technol, Peoples R China; Huazhong Inst Electroopt, Peoples R China
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- Yuan, Fanglong (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Chen, Hongting (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Jinan Univ, Peoples R China; Huazhong Univ Sci & Technol, Peoples R China
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- Wang, Rongwen (author)
- Huazhong Univ Sci & Technol, Peoples R China
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- Bai, Sai (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten,Zhejiang Univ, Peoples R China
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- Tu, Guoli (author)
- Huazhong Univ Sci & Technol, Peoples R China
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- Hou, Lintao (author)
- Jinan Univ, Peoples R China
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(creator_code:org_t)
- 2021-03-04
- 2021
- English.
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In: The Journal of Physical Chemistry Letters. - : AMER CHEMICAL SOC. - 1948-7185. ; 12:9, s. 2437-2443
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- CsPbI3 perovskite nanocrystals (NCs) have recently emerged as promising materials for optoelectronic devices because of their superior properties. However, the poor stability of the CsPbI3 NCs induced by easy ligand desorption represents a key issue limiting their practical applications. Herein, we report stable and highly luminescent black-phase CsPbI3 NCs passivated by novel ligands of sodium dodecyl sulfate (SDS). Theoretical calculation results reveal a stronger adsorption energy of SDS molecules at the CsPbI3 surface than that of commonly used oleic acid. As a result, the defect formation caused by the ligand loss during the purification process is greatly suppressed. The optimized SDS- CsPbI3 NCs exhibit significantly reduced surface defects, much enhanced stability, and superior photoluminescence efficiency. The red perovskite light-emitting diodes based on the SDS-CsPbI3 NCs demonstrate an external quantum efficiency of 8.4%, which shows a 4-fold improvement compared to the devices based on the oleic acid-modified CsPbI3 NCs.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Zhang, Jibin
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Yin, Chunyang
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Yang, Fei
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Yao, Yuan
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Yuan, Fanglong
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Chen, Hongting
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show more...
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Wang, Rongwen
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Bai, Sai
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Tu, Guoli
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Hou, Lintao
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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The Journal of P ...
- By the university
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Linköping University