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Balancing Charge In...
Balancing Charge Injection via a Tailor-Made Electron-Transporting Material for High Performance Blue Perovskite QLEDs
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- Yuan, Shichen (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Fang, Tao (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Huang, Jing (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Li, Xiansheng (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Wei, Changting (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Zhou, Yihui (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Li, Yan (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Zheng, Xin (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Huang, Jinhai (author)
- East China Univ Sci & Technol, Peoples R China; East China Univ Sci & Technol, Peoples R China
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- Su, Jianhua (author)
- East China Univ Sci & Technol, Peoples R China; East China Univ Sci & Technol, Peoples R China
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- Baryshnikov, Glib (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Choy, Wallace C. H. (author)
- Univ Hong Kong, Peoples R China
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- Zeng, Haibo (author)
- Nanjing Univ Sci & Technol, Peoples R China
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- Xu, Bo (author)
- Nanjing Univ Sci & Technol, Peoples R China
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(creator_code:org_t)
- 2023-01-03
- 2023
- English.
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In: ACS Energy Letters. - : AMER CHEMICAL SOC. - 2380-8195. ; 8:1, s. 818-826
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- One of the great challenges in perovskite quantum dot light-emitting diodes (Pe-QLEDs) is the unbalanced charge injection that significantly hinders the device performance and stability. Herein, we tailor-made a high mobility electron-transporting material (ETM), named B2, to balance the carrier injection in blue Pe-QLEDs. B2 with a tailored asymmetric anthracenyl structure exhibits a promising electron mobility of 2.7 x 10(-4) cm(2)center dot V-1 center dot s(-1), which is almost 20 times higher than the commonly used ETM-TPBi (1.1 x 10(-5) cm(2)center dot V-1 center dot s(-1)). Subsequently, sky blue (490 nm) Pe-QLED with B2 as the ETM presented a remarkably high external quantum efficiency (EQE) of 13.17% and a low turn-on voltage of 2.2 V, which is much better than that of the TPBi-based device (EQE of 8.31% and Vturn-on of 3.2 V). In addition, B2 also demonstrated a universal application in green and deep blue Pe-QLEDs. This work provides an important guidance to rational design of high electron mobility ETMs for high-performance LEDs.
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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Yuan, Shichen
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Fang, Tao
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Huang, Jing
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Li, Xiansheng
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Wei, Changting
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Zhou, Yihui
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show more...
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Li, Yan
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Zheng, Xin
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Huang, Jinhai
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Su, Jianhua
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Baryshnikov, Gli ...
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Choy, Wallace C. ...
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Zeng, Haibo
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Xu, Bo
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- 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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ACS Energy Lette ...
- By the university
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Linköping University