Efficient CsPbBr                         3                          Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control

Li Peng Cheng; Jing Sheng Huang; Yang Shen; Guo Peng Li; Xiao Ke Liu; Wei Li; Yu Han Wang; Yan Qing Li; Yang Jiang; Feng Gao; Chun Sing Lee; Jian Xin Tang

doi:10.1002/adom.201801534

Efficient CsPbBr ₃ Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control

Li Peng Cheng, Jing Sheng Huang, Yang Shen, Guo Peng Li, Xiao Ke Liu, Wei Li, Yu Han Wang, Yan Qing Li, Yang Jiang, Feng Gao, Chun Sing Lee, Jian Xin Tang

Research output: Contribution to journal › Article › peer-review

163 Scopus citations

Abstract

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 (CsPbBr ₃ ) perovskite films with the combination of two additives. The phenethylammonium bromide additive enables the formation of mixed-dimensional CsPbBr ₃ perovskites featuring the reduced grain size (<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 .

Original language	English
Article number	1801534
Journal	Advanced Optical Materials
Volume	7
Issue number	4
DOIs	https://doi.org/10.1002/adom.201801534
State	Published - 19 Feb 2019
Externally published	Yes

Keywords

CsPbBr
all-inorganic perovskite films
morphology control
perovskite light-emitting diodes

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10.1002/adom.201801534

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Cheng, L. P., Huang, J. S., Shen, Y., Li, G. P., Liu, X. K., Li, W., Wang, Y. H., Li, Y. Q., Jiang, Y., Gao, F., Lee, C. S., & Tang, J. X. (2019). Efficient CsPbBr ₃ Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control Advanced Optical Materials, 7(4), Article 1801534. https://doi.org/10.1002/adom.201801534

@article{fe46246812d3462b8fe72fa01947cf2f,

title = " Efficient CsPbBr 3 Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control ",

abstract = " 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 (CsPbBr 3 ) perovskite films with the combination of two additives. The phenethylammonium bromide additive enables the formation of mixed-dimensional CsPbBr 3 perovskites featuring the reduced grain size (<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 .",

keywords = "CsPbBr, all-inorganic perovskite films, morphology control, perovskite light-emitting diodes",

author = "Cheng, \{Li Peng\} and Huang, \{Jing Sheng\} and Yang Shen and Li, \{Guo Peng\} and Liu, \{Xiao Ke\} and Wei Li and Wang, \{Yu Han\} and Li, \{Yan Qing\} and Yang Jiang and Feng Gao and Lee, \{Chun Sing\} and Tang, \{Jian Xin\}",

note = "Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2019",

month = feb,

day = "19",

doi = "10.1002/adom.201801534",

language = "英语",

volume = "7",

journal = "Advanced Optical Materials",

issn = "2195-1071",

publisher = "John Wiley \& Sons Inc.",

number = "4",

}

Cheng, LP, Huang, JS, Shen, Y, Li, GP, Liu, XK, Li, W, Wang, YH, Li, YQ, Jiang, Y, Gao, F, Lee, CS & Tang, JX 2019, ' Efficient CsPbBr ₃ Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control ', Advanced Optical Materials, vol. 7, no. 4, 1801534. https://doi.org/10.1002/adom.201801534

Efficient CsPbBr ₃ Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control . / Cheng, Li Peng; Huang, Jing Sheng; Shen, Yang et al.
In: Advanced Optical Materials, Vol. 7, No. 4, 1801534, 19.02.2019.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Efficient CsPbBr 3 Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control

AU - Cheng, Li Peng

AU - Huang, Jing Sheng

AU - Shen, Yang

AU - Li, Guo Peng

AU - Liu, Xiao Ke

AU - Li, Wei

AU - Wang, Yu Han

AU - Li, Yan Qing

AU - Jiang, Yang

AU - Gao, Feng

AU - Lee, Chun Sing

AU - Tang, Jian Xin

PY - 2019/2/19

Y1 - 2019/2/19

N2 - 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 (CsPbBr 3 ) perovskite films with the combination of two additives. The phenethylammonium bromide additive enables the formation of mixed-dimensional CsPbBr 3 perovskites featuring the reduced grain size (<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 .

AB - 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 (CsPbBr 3 ) perovskite films with the combination of two additives. The phenethylammonium bromide additive enables the formation of mixed-dimensional CsPbBr 3 perovskites featuring the reduced grain size (<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 .

KW - CsPbBr

KW - all-inorganic perovskite films

KW - morphology control

KW - perovskite light-emitting diodes

UR - https://www.scopus.com/pages/publications/85059159900

U2 - 10.1002/adom.201801534

DO - 10.1002/adom.201801534

M3 - 文章

AN - SCOPUS:85059159900

SN - 2195-1071

VL - 7

JO - Advanced Optical Materials

JF - Advanced Optical Materials

IS - 4

M1 - 1801534

ER -

Efficient CsPbBr ₃ Perovskite Light-Emitting Diodes Enabled by Synergetic Morphology Control

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