Mixed-Halide Perovskites with Halogen Bond Induced Interlayer Locking Structure for Stable Pure-Red PeLEDs

Xinliang Fu; Mei Wang; Yuanzhi Jiang; Xiangyu Guo; Xin Zhao; Changjiu Sun; Li Zhang; Keyu Wei; Hsien-Yi Hsu; Mingjian Yuan

doi:10.1021/acs.nanolett.3c01319

Mixed-Halide Perovskites with Halogen Bond Induced Interlayer Locking Structure for Stable Pure-Red PeLEDs

Xinliang Fu
, Mei Wang^*
, Yuanzhi Jiang
, Xiangyu Guo
, Xin Zhao
, Changjiu Sun
, Li Zhang
, Keyu Wei
, Hsien-Yi Hsu
, Mingjian Yuan^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

47 Citations (Scopus)

Abstract

Mixed-halide perovskites enable precise spectral tuning across the entire spectral range through composition engineering. However, mixed halide perovskites are susceptible to ion migration under continuous illumination or electric field, which significantly impedes the actual application of perovskite light-emitting diodes (PeLEDs). Here, we demonstrate a novel approach to introduce strong and homogeneous halogen bonds within the quasi-two-dimensional perovskite lattices by means of an interlayer locking structure, which effectively suppresses ion migration by increasing the corresponding activation energy. Various characterizations confirmed that intralattice halogen bonds enhance the stability of quasi-2D mixed-halide perovskite films. Here, we report that the PeLEDs exhibit an impressive 18.3% EQE with pure red emission with CIE color coordinate of (0.67, 0.33) matching Rec. 2100 standards and demonstrate an operational half-life of ∼540 min at an initial luminance of 100 cd m^-2, representing one of the most stable mixed-halide pure red PeLEDs reported to date. © 2023 American Chemical Society.

Original language	English
Pages (from-to)	6465–6473
Journal	Nano Letters
Volume	23
Issue number	14
Online published	6 Jul 2023
DOIs	https://doi.org/10.1021/acs.nanolett.3c01319
Publication status	Published - 26 Jul 2023

Funding

This work is financially supported by the National Key Research and Development Program of China (2022YFE0201500). M. Yuan acknowledges financial support from The National Science Fund for Distinguished Young Scholars (No. T2225024). The authors acknowledge financial support from the National Natural Science Foundation of China (Nos. 91956130 and 62104116). The authors acknowledge financial support from the Innovation and Technology Commission (Grant no. MHP/104/21) and Shenzhen Science Technology and Innovation Commission (Grant no. JCYJ20210324125612035).

Research Keywords

Halogen bonds
Ion migration
Mixed halide
PeLEDs
Spectral stability

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10.1021/acs.nanolett.3c01319

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title = "Mixed-Halide Perovskites with Halogen Bond Induced Interlayer Locking Structure for Stable Pure-Red PeLEDs",

abstract = "Mixed-halide perovskites enable precise spectral tuning across the entire spectral range through composition engineering. However, mixed halide perovskites are susceptible to ion migration under continuous illumination or electric field, which significantly impedes the actual application of perovskite light-emitting diodes (PeLEDs). Here, we demonstrate a novel approach to introduce strong and homogeneous halogen bonds within the quasi-two-dimensional perovskite lattices by means of an interlayer locking structure, which effectively suppresses ion migration by increasing the corresponding activation energy. Various characterizations confirmed that intralattice halogen bonds enhance the stability of quasi-2D mixed-halide perovskite films. Here, we report that the PeLEDs exhibit an impressive 18.3\% EQE with pure red emission with CIE color coordinate of (0.67, 0.33) matching Rec. 2100 standards and demonstrate an operational half-life of ∼540 min at an initial luminance of 100 cd m-2, representing one of the most stable mixed-halide pure red PeLEDs reported to date. {\textcopyright} 2023 American Chemical Society.",

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T1 - Mixed-Halide Perovskites with Halogen Bond Induced Interlayer Locking Structure for Stable Pure-Red PeLEDs

AU - Fu, Xinliang

AU - Wang, Mei

AU - Jiang, Yuanzhi

AU - Guo, Xiangyu

AU - Zhao, Xin

AU - Sun, Changjiu

AU - Zhang, Li

AU - Wei, Keyu

AU - Hsu, Hsien-Yi

AU - Yuan, Mingjian

PY - 2023/7/26

Y1 - 2023/7/26

N2 - Mixed-halide perovskites enable precise spectral tuning across the entire spectral range through composition engineering. However, mixed halide perovskites are susceptible to ion migration under continuous illumination or electric field, which significantly impedes the actual application of perovskite light-emitting diodes (PeLEDs). Here, we demonstrate a novel approach to introduce strong and homogeneous halogen bonds within the quasi-two-dimensional perovskite lattices by means of an interlayer locking structure, which effectively suppresses ion migration by increasing the corresponding activation energy. Various characterizations confirmed that intralattice halogen bonds enhance the stability of quasi-2D mixed-halide perovskite films. Here, we report that the PeLEDs exhibit an impressive 18.3% EQE with pure red emission with CIE color coordinate of (0.67, 0.33) matching Rec. 2100 standards and demonstrate an operational half-life of ∼540 min at an initial luminance of 100 cd m-2, representing one of the most stable mixed-halide pure red PeLEDs reported to date. © 2023 American Chemical Society.

AB - Mixed-halide perovskites enable precise spectral tuning across the entire spectral range through composition engineering. However, mixed halide perovskites are susceptible to ion migration under continuous illumination or electric field, which significantly impedes the actual application of perovskite light-emitting diodes (PeLEDs). Here, we demonstrate a novel approach to introduce strong and homogeneous halogen bonds within the quasi-two-dimensional perovskite lattices by means of an interlayer locking structure, which effectively suppresses ion migration by increasing the corresponding activation energy. Various characterizations confirmed that intralattice halogen bonds enhance the stability of quasi-2D mixed-halide perovskite films. Here, we report that the PeLEDs exhibit an impressive 18.3% EQE with pure red emission with CIE color coordinate of (0.67, 0.33) matching Rec. 2100 standards and demonstrate an operational half-life of ∼540 min at an initial luminance of 100 cd m-2, representing one of the most stable mixed-halide pure red PeLEDs reported to date. © 2023 American Chemical Society.

KW - Halogen bonds

KW - Ion migration

KW - Mixed halide

KW - PeLEDs

KW - Spectral stability

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U2 - 10.1021/acs.nanolett.3c01319

DO - 10.1021/acs.nanolett.3c01319

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VL - 23

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EP - 6473

JO - Nano Letters

JF - Nano Letters

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ER -

Mixed-Halide Perovskites with Halogen Bond Induced Interlayer Locking Structure for Stable Pure-Red PeLEDs

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Mixed-Halide Perovskites with Halogen Bond Induced Interlayer Locking Structure for Stable Pure-Red PeLEDs

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ITF: Large-area, High-performing and Stable Perovskite Light-emitting Didoes

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