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Efficient CsPbBr3 P...
Efficient CsPbBr3 Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control
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- Cheng, Li-Peng (author)
- Soochow Univ, Peoples R China
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- Huang, Jing-Sheng (author)
- Soochow Univ, Peoples R China
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- Shen, Yang (author)
- Soochow Univ, Peoples R China
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- Li, Guo-Peng (author)
- Hefei Univ Technol HFUT, Peoples R China
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- Liu, Xiaoke (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Li, Wei (author)
- Soochow Univ, Peoples R China
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- Wang, Yu-Han (author)
- Soochow Univ, Peoples R China
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- Li, Yan-Qing (author)
- Soochow Univ, Peoples R China
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- Jiang, Yang (author)
- Hefei Univ Technol HFUT, Peoples R China
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- Gao, Feng (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Lee, Chun-Sing (author)
- City Univ Hong Kong, Peoples R China
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- Tang, Jian-Xin (author)
- Soochow Univ, Peoples R China
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(creator_code:org_t)
- 2018-12-27
- 2019
- English.
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In: Advanced Optical Materials. - : WILEY-V C H VERLAG GMBH. - 2162-7568 .- 2195-1071. ; 7:4
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Abstract
Subject headings
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- The development of solution-processed inorganic metal halide perovskite light-emitting diodes (PeLEDs) is currently hindered by low emission efficiency due to morphological defects and severe non-radiative recombination in all-inorganic perovskite emitters. Herein, bright PeLEDs are demonstrated by synergetic morphology control over cesium lead bromide (CsPbBr3) perovskite films with the combination of two additives. The phenethylammonium bromide additive enables the formation of mixed-dimensional CsPbBr3 perovskites featuring the reduced grain size (amp;lt;15 nm) and efficient energy funneling, while the dielectric polyethyleneglycol additive promotes the formation of highly compact and pinhole-free perovskite films with defect passivation at grain boundaries. Consequently, green PeLEDs achieve a current efficiency of 37.14 cd A(-1) and an external quantum efficiency of 13.14% with the maximum brightness up to 45 990 cd m(-2) and high color purity. Furthermore, this method can be effectively extended to realize flexible PeLEDs on plastic substrates with a high efficiency of 31.0 cd A(-1).
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- all-inorganic perovskite films; CsPbBr3; morphology control; perovskite light-emitting diodes
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Cheng, Li-Peng
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Huang, Jing-Shen ...
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Shen, Yang
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Li, Guo-Peng
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Liu, Xiaoke
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Li, Wei
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show more...
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Wang, Yu-Han
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Li, Yan-Qing
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Jiang, Yang
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Gao, Feng
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Lee, Chun-Sing
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Tang, Jian-Xin
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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 Other Physics To ...
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Advanced Optical ...
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Linköping University