High-Performance Green Light-Emitting Diodes Based on MAPbBr3-Polymer Composite Films Prepared by Gas-Assisted Crystallization

Yun Cheol Kim; Yoann Porte; Sung Doo Baek; Seong Rae Cho; Jae Min Myoung

doi:10.1021/acsami.7b14544

High-Performance Green Light-Emitting Diodes Based on MAPbBr₃-Polymer Composite Films Prepared by Gas-Assisted Crystallization

Yun Cheol Kim, Yoann Porte, Sung Doo Baek, Seong Rae Cho, Jae Min Myoung

Department of Materials Science and Engineering

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

24 Citations (Scopus)

Abstract

The morphology of perovskite films has a significant impact on luminous characteristics of perovskite light-emitting diodes (PeLEDs). To obtain a highly uniform methylammonium lead tribromide (MAPbBr₃) film, a gas-assisted crystallization method is introduced with a mixed solution of MAPbBr₃ precursor and polymer matrix. The ultrafast evaporation of the solvent causes a high degree of supersaturation which expedites the generation of a large number of nuclei to form a MAPbBr₃-polymer composite film with full surface coverage and nano-sized grains. The addition of the polymer matrix significantly affects the optical properties and morphology of MAPbBr₃ films. The PeLED made of the MAPbBr₃-polymer composite film exhibits an outstanding device performance of a maximum luminance of 6800 cd·m^-2 and a maximum current efficiency of 1.12 cd·A^-1. Furthermore, 1 cm² area pixel of PeLED displays full coverage of a strong green electroluminescence, implying that the high-quality perovskite film can be useful for large-area applications in perovskite-based optoelectronic devices.

Original language	English
Pages (from-to)	44106-44113
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	50
DOIs	https://doi.org/10.1021/acsami.7b14544
Publication status	Published - 2017 Dec 20

Bibliographical note

Funding Information:
This work was supported by the Samsung Research Funding Center of Samsung Electronics under Project number SRFC-MA1301-07.

Publisher Copyright:
© 2017 American Chemical Society.

All Science Journal Classification (ASJC) codes

Materials Science(all)

Access to Document

10.1021/acsami.7b14544

Cite this

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title = "High-Performance Green Light-Emitting Diodes Based on MAPbBr3-Polymer Composite Films Prepared by Gas-Assisted Crystallization",

abstract = "The morphology of perovskite films has a significant impact on luminous characteristics of perovskite light-emitting diodes (PeLEDs). To obtain a highly uniform methylammonium lead tribromide (MAPbBr3) film, a gas-assisted crystallization method is introduced with a mixed solution of MAPbBr3 precursor and polymer matrix. The ultrafast evaporation of the solvent causes a high degree of supersaturation which expedites the generation of a large number of nuclei to form a MAPbBr3-polymer composite film with full surface coverage and nano-sized grains. The addition of the polymer matrix significantly affects the optical properties and morphology of MAPbBr3 films. The PeLED made of the MAPbBr3-polymer composite film exhibits an outstanding device performance of a maximum luminance of 6800 cd·m-2 and a maximum current efficiency of 1.12 cd·A-1. Furthermore, 1 cm2 area pixel of PeLED displays full coverage of a strong green electroluminescence, implying that the high-quality perovskite film can be useful for large-area applications in perovskite-based optoelectronic devices.",

author = "Kim, {Yun Cheol} and Yoann Porte and Baek, {Sung Doo} and Cho, {Seong Rae} and Myoung, {Jae Min}",

note = "Funding Information: This work was supported by the Samsung Research Funding Center of Samsung Electronics under Project number SRFC-MA1301-07. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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AU - Cho, Seong Rae

AU - Myoung, Jae Min

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N2 - The morphology of perovskite films has a significant impact on luminous characteristics of perovskite light-emitting diodes (PeLEDs). To obtain a highly uniform methylammonium lead tribromide (MAPbBr3) film, a gas-assisted crystallization method is introduced with a mixed solution of MAPbBr3 precursor and polymer matrix. The ultrafast evaporation of the solvent causes a high degree of supersaturation which expedites the generation of a large number of nuclei to form a MAPbBr3-polymer composite film with full surface coverage and nano-sized grains. The addition of the polymer matrix significantly affects the optical properties and morphology of MAPbBr3 films. The PeLED made of the MAPbBr3-polymer composite film exhibits an outstanding device performance of a maximum luminance of 6800 cd·m-2 and a maximum current efficiency of 1.12 cd·A-1. Furthermore, 1 cm2 area pixel of PeLED displays full coverage of a strong green electroluminescence, implying that the high-quality perovskite film can be useful for large-area applications in perovskite-based optoelectronic devices.

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