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Stable and bright f...
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Miao, YanfengNanjing Tech Univ NanjingTech, Peoples R China
(author)
Stable and bright formamidinium-based perovskite light-emitting diodes with high energy conversion efficiency
- Article/chapterEnglish2019
Publisher, publication year, extent ...
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2019-08-09
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NATURE PUBLISHING GROUP,2019
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:liu-159862
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-159862URI
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https://doi.org/10.1038/s41467-019-11567-1DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Funding Agencies|Joint Research Program between China and European Union [2016YFE0112000]; Major Research Plan of the National Natural Science Foundation of China [91733302]; National Basic Research Program of China-Fundamental Studies of Perovskite Solar Cells [2015CB932200]; Natural Science Foundation of Jiangsu Province, China [BK20150043, BK20150064, BK20180085]; National Key R&D Program of China [2016YFB0401600, 2017YFB0404500, 2018YFB0406704]; National Natural Science Foundation of China [11474164, 61875084, 61634001, 51522209, 91433204]; National Science Fund for Distinguished Young Scholars [61725502]; Major Program of Natural Science Research of Jiangsu Higher Education Institutions of China [18KJA510002]; Synergetic Innovation Center for Organic Electronics and Information Displays; Natural Science Foundation of Zhejiang Province, China [LY17A040008]
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Solution-processable perovskites show highly emissive and good charge transport, making them attractive for low-cost light-emitting diodes (LEDs) with high energy conversion efficiencies. Despite recent advances in device efficiency, the stability of perovskite LEDs is still a major obstacle. Here, we demonstrate stable and bright perovskite LEDs with high energy conversion efficiencies by optimizing formamidinium lead iodide films. Our LEDs show an energy conversion efficiency of 10.7%, and an external quantum efficiency of 14.2% without outcoupling enhancement through controlling the concentration of the precursor solutions. The device shows low efficiency droop, i.e. 8.3% energy conversion efficiency and 14.0% external quantum efficiency at a current density of 300 mA cm(-2), making the device more efficient than state-of-the-art organic and quantum-dot LEDs at high current densities. Furthermore, the half-lifetime of device with benzylamine treatment is 23.7 hr under a current density of 100 mA cm(-2), comparable to the lifetime of near-infrared organic LEDs.
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Ke, YouNanjing Tech Univ NanjingTech, Peoples R China
(author)
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Wang, NanaNanjing Tech Univ NanjingTech, Peoples R China
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Zou, WeiNanjing Tech Univ NanjingTech, Peoples R China
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Xu, MengmengNanjing Tech Univ NanjingTech, Peoples R China
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Cao, YuNanjing Tech Univ NanjingTech, Peoples R China
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Sun, YanNanjing Tech Univ NanjingTech, Peoples R China
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Yang, RongNanjing Tech Univ NanjingTech, Peoples R China
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Wang, YingNanjing Tech Univ NanjingTech, Peoples R China
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Tong, YunfangNanjing Tech Univ NanjingTech, Peoples R China
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Xu, WenjieNanjing Tech Univ NanjingTech, Peoples R China
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Zhang, LiangdongNanjing Tech Univ NanjingTech, Peoples R China
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Li, RenzhiNanjing Tech Univ NanjingTech, Peoples R China
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Li, JingZhejiang Univ, Peoples R China
(author)
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He, HaipingZhejiang Univ, Peoples R China
(author)
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Jin, YizhengZhejiang Univ, Peoples R China
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Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)fenga88
(author)
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Huang, WeiNanjing Tech Univ NanjingTech, Peoples R China; Nanjing Univ Posts and Telecommun, Peoples R China; Nanjing Univ Posts and Telecommun, Peoples R China; Northwestern Polytech Univ, Peoples R China
(author)
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Wang, JianpuNanjing Tech Univ NanjingTech, Peoples R China
(author)
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Nanjing Tech Univ NanjingTech, Peoples R ChinaZhejiang Univ, Peoples R China
(creator_code:org_t)
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In:Nature Communications: NATURE PUBLISHING GROUP102041-1723
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Miao, Yanfeng
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Ke, You
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Wang, Nana
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Zou, Wei
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Xu, Mengmeng
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Cao, Yu
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Sun, Yan
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Yang, Rong
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Wang, Ying
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Tong, Yunfang
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Xu, Wenjie
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Zhang, Liangdong
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Li, Renzhi
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Li, Jing
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He, Haiping
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Jin, Yizheng
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Gao, Feng
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Huang, Wei
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Wang, Jianpu
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Linköping University