Boosting the efficiency of quasi-2D perovskites light-emitting diodes by using encapsulation growth method

Yanliang Liu; Zhongkai Yu; Shi Chen; Jong Hyun Park; Eui Dae Jung; Seungjin Lee; Keehoon Kang; Seo Jin Ko; Jongchul Lim; Myoung Hoon Song; Baomin Xu; Henry J. Snaith; Sung Heum Park; Bo Ram Lee

doi:10.1016/j.nanoen.2020.105511

Boosting the efficiency of quasi-2D perovskites light-emitting diodes by using encapsulation growth method

Yanliang Liu, Zhongkai Yu, Shi Chen, Jong Hyun Park, Eui Dae Jung, Seungjin Lee, Keehoon Kang, Seo Jin Ko, Jongchul Lim, Myoung Hoon Song, Baomin Xu, Henry J. Snaith, Sung Heum Park, Bo Ram Lee

Department of Materials Science and Engineering

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

34 Citations (Scopus)

Abstract

The fabrication of perovskite film is crucial for achieving efficient perovskite photoelectric device. Herein, a simple and novel encapsulation growth method was applied to prepare high-quality quasi-2D perovskite films with advantages of compact and uniform morphology, high crystallinity with lower defect density, enhanced photoluminescence quantum yield (PLQY) and optimized multidimensional domain distribution and crystallite orientation for perovskite light-emitting diodes (PeLEDs). The encapsulation growth method was found to decrease the proportion of the low-dimensional (n = 1,2,3) domains while increasing the high-dimensional domains content with randomly-oriented crystals, which simultaneously enhanced the overall energy landscape effect and charges transport within the quasi-2D perovskite films, and the PLQY of the quasi-2D perovskites significantly improved from 9.2% to 60.0%. Finally, an efficient flexible green PeLEDs was obtained with a high luminous efficiency (LE) of 47.1 cd/A, and a luminance brightness of 8300 cd/m², and an efficient sky-blue PeLEDs was also achieved with record EQE of 12.8% by using encapsulation growth method. This encapsulation growth method provides a promising strategy for boosting the efficiency of quasi-2D PeLEDs.

Original language	English
Article number	105511
Journal	Nano Energy
Volume	80
DOIs	https://doi.org/10.1016/j.nanoen.2020.105511
Publication status	Published - 2021 Feb

Bibliographical note

Funding Information:
Yanliang Liu, Zhongkai Yu and Shi Chen contributed equally to this work. This study was supported by the National Research Foundation of Republic of Korea (NRF- 2018R1C1B6005778 and 2020R1A2B5B01001611 ), and the Peacock Team Project funding from Shenzhen Science and Technology Innovation Committee (Grant No. KQTD2015033110182370 ). This work was also financially supported by the National Natural Science Foundation of China ( 62004091 , 62004089 ) and the Fundamental Research Project from Shenzhen Science and Technology Innovation Committee (Grant No. JCYJ20190809150811504 ) and the Joint Funds Project from Guangdong Basic and Applied Basic Research Fundation (Grant No. 2019A1515110439 ).

Publisher Copyright:
© 2020 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Materials Science(all)
Electrical and Electronic Engineering

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10.1016/j.nanoen.2020.105511

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title = "Boosting the efficiency of quasi-2D perovskites light-emitting diodes by using encapsulation growth method",

abstract = "The fabrication of perovskite film is crucial for achieving efficient perovskite photoelectric device. Herein, a simple and novel encapsulation growth method was applied to prepare high-quality quasi-2D perovskite films with advantages of compact and uniform morphology, high crystallinity with lower defect density, enhanced photoluminescence quantum yield (PLQY) and optimized multidimensional domain distribution and crystallite orientation for perovskite light-emitting diodes (PeLEDs). The encapsulation growth method was found to decrease the proportion of the low-dimensional (n = 1,2,3) domains while increasing the high-dimensional domains content with randomly-oriented crystals, which simultaneously enhanced the overall energy landscape effect and charges transport within the quasi-2D perovskite films, and the PLQY of the quasi-2D perovskites significantly improved from 9.2% to 60.0%. Finally, an efficient flexible green PeLEDs was obtained with a high luminous efficiency (LE) of 47.1 cd/A, and a luminance brightness of 8300 cd/m2, and an efficient sky-blue PeLEDs was also achieved with record EQE of 12.8% by using encapsulation growth method. This encapsulation growth method provides a promising strategy for boosting the efficiency of quasi-2D PeLEDs.",

author = "Yanliang Liu and Zhongkai Yu and Shi Chen and Park, {Jong Hyun} and Jung, {Eui Dae} and Seungjin Lee and Keehoon Kang and Ko, {Seo Jin} and Jongchul Lim and Song, {Myoung Hoon} and Baomin Xu and Snaith, {Henry J.} and Park, {Sung Heum} and Lee, {Bo Ram}",

note = "Funding Information: Yanliang Liu, Zhongkai Yu and Shi Chen contributed equally to this work. This study was supported by the National Research Foundation of Republic of Korea (NRF- 2018R1C1B6005778 and 2020R1A2B5B01001611 ), and the Peacock Team Project funding from Shenzhen Science and Technology Innovation Committee (Grant No. KQTD2015033110182370 ). This work was also financially supported by the National Natural Science Foundation of China ( 62004091 , 62004089 ) and the Fundamental Research Project from Shenzhen Science and Technology Innovation Committee (Grant No. JCYJ20190809150811504 ) and the Joint Funds Project from Guangdong Basic and Applied Basic Research Fundation (Grant No. 2019A1515110439 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2021",

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doi = "10.1016/j.nanoen.2020.105511",

language = "English",

volume = "80",

journal = "Nano Energy",

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T1 - Boosting the efficiency of quasi-2D perovskites light-emitting diodes by using encapsulation growth method

AU - Liu, Yanliang

AU - Yu, Zhongkai

AU - Chen, Shi

AU - Park, Jong Hyun

AU - Jung, Eui Dae

AU - Lee, Seungjin

AU - Kang, Keehoon

AU - Ko, Seo Jin

AU - Lim, Jongchul

AU - Song, Myoung Hoon

AU - Xu, Baomin

AU - Snaith, Henry J.

AU - Park, Sung Heum

AU - Lee, Bo Ram

N1 - Funding Information: Yanliang Liu, Zhongkai Yu and Shi Chen contributed equally to this work. This study was supported by the National Research Foundation of Republic of Korea (NRF- 2018R1C1B6005778 and 2020R1A2B5B01001611 ), and the Peacock Team Project funding from Shenzhen Science and Technology Innovation Committee (Grant No. KQTD2015033110182370 ). This work was also financially supported by the National Natural Science Foundation of China ( 62004091 , 62004089 ) and the Fundamental Research Project from Shenzhen Science and Technology Innovation Committee (Grant No. JCYJ20190809150811504 ) and the Joint Funds Project from Guangdong Basic and Applied Basic Research Fundation (Grant No. 2019A1515110439 ). Publisher Copyright: © 2020 Elsevier Ltd

PY - 2021/2

Y1 - 2021/2

N2 - The fabrication of perovskite film is crucial for achieving efficient perovskite photoelectric device. Herein, a simple and novel encapsulation growth method was applied to prepare high-quality quasi-2D perovskite films with advantages of compact and uniform morphology, high crystallinity with lower defect density, enhanced photoluminescence quantum yield (PLQY) and optimized multidimensional domain distribution and crystallite orientation for perovskite light-emitting diodes (PeLEDs). The encapsulation growth method was found to decrease the proportion of the low-dimensional (n = 1,2,3) domains while increasing the high-dimensional domains content with randomly-oriented crystals, which simultaneously enhanced the overall energy landscape effect and charges transport within the quasi-2D perovskite films, and the PLQY of the quasi-2D perovskites significantly improved from 9.2% to 60.0%. Finally, an efficient flexible green PeLEDs was obtained with a high luminous efficiency (LE) of 47.1 cd/A, and a luminance brightness of 8300 cd/m2, and an efficient sky-blue PeLEDs was also achieved with record EQE of 12.8% by using encapsulation growth method. This encapsulation growth method provides a promising strategy for boosting the efficiency of quasi-2D PeLEDs.

AB - The fabrication of perovskite film is crucial for achieving efficient perovskite photoelectric device. Herein, a simple and novel encapsulation growth method was applied to prepare high-quality quasi-2D perovskite films with advantages of compact and uniform morphology, high crystallinity with lower defect density, enhanced photoluminescence quantum yield (PLQY) and optimized multidimensional domain distribution and crystallite orientation for perovskite light-emitting diodes (PeLEDs). The encapsulation growth method was found to decrease the proportion of the low-dimensional (n = 1,2,3) domains while increasing the high-dimensional domains content with randomly-oriented crystals, which simultaneously enhanced the overall energy landscape effect and charges transport within the quasi-2D perovskite films, and the PLQY of the quasi-2D perovskites significantly improved from 9.2% to 60.0%. Finally, an efficient flexible green PeLEDs was obtained with a high luminous efficiency (LE) of 47.1 cd/A, and a luminance brightness of 8300 cd/m2, and an efficient sky-blue PeLEDs was also achieved with record EQE of 12.8% by using encapsulation growth method. This encapsulation growth method provides a promising strategy for boosting the efficiency of quasi-2D PeLEDs.

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Boosting the efficiency of quasi-2D perovskites light-emitting diodes by using encapsulation growth method

Abstract

Bibliographical note

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