Volume 135, Issue 2 e202213240
Forschungsartikel

Highly Luminescent One-Dimensional Organic–Inorganic Hybrid Double-Perovskite-Inspired Materials for Single-Component Warm White-Light-Emitting Diodes

Tianxin Bai

Tianxin Bai

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Xiaochen Wang

Xiaochen Wang

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Zhongyi Wang

Zhongyi Wang

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Sujun Ji

Sujun Ji

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Xuan Meng

Xuan Meng

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Qiujie Wang

Qiujie Wang

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Ruiling Zhang

Ruiling Zhang

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Peigeng Han

Peigeng Han

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Prof. Dr. Ke-li Han

Prof. Dr. Ke-li Han

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023 P. R. China

University of the Chinese Academy of Sciences, Beijing, 100049 P. R. China

Deceased (17 March 2022)

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Dr. Junsheng Chen

Dr. Junsheng Chen

Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark

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Feng Liu

Corresponding Author

Feng Liu

Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China

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Bin Yang

Corresponding Author

Bin Yang

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023 P. R. China

University of the Chinese Academy of Sciences, Beijing, 100049 P. R. China

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First published: 14 November 2022
Citations: 2

Abstract

Double perovskites (DPs) are one of the most promising candidates for developing white light-emitting diodes (WLEDs) owing to their intrinsic broadband emission from self-trapped excitons (STEs). Translation of three-dimensional (3D) DPs to one-dimensional (1D) analogues, which could break the octahedral tolerance factor limit, is so far remaining unexplored. Herein, by employing a fluorinated organic cation, we report a series of highly luminescent 1D DP-inspired materials, (DFPD)2MIInBr6 (DFPD=4,4-difluoropiperidinium, MI=K+ and Rb+). Highly efficient warm-white photoluminescence quantum yield of 92 % is achieved by doping 0.3 % Sb3+ in (DFPD)2KInBr6. Furthermore, single-component warm-WLEDs fabricated with (DFPD)2KInBr6:Sb yield a luminance of 300 cd/m2, which is one of the best-performing lead-free metal-halides WLEDs reported so far. Our study expands the scope of In-based metal-halides from 3D to 1D, which exhibit superior optical performances and broad application prospects.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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