Enhancing the Performance of Perovskite Light-Emitting Diodes via Synergistic Effect of Defect Passivation and Dielectric Screening

Xuanchi Yu; Jia Guo; Yulin Mao; Chengwei Shan; Fengshou Tian; Bingheng Meng; Zhaojin Wang; Tianqi Zhang; Aung Ko Ko Kyaw; Shuming Chen; Xiaowei Sun; Kai Wang; Rui Chen; Guichuan Xing

doi:10.1007/s40820-024-01405-5

Nano-Micro Letters (May 2024)

Enhancing the Performance of Perovskite Light-Emitting Diodes via Synergistic Effect of Defect Passivation and Dielectric Screening

Xuanchi Yu,
Jia Guo,
Yulin Mao,
Chengwei Shan,
Fengshou Tian,
Bingheng Meng,
Zhaojin Wang,
Tianqi Zhang,
Aung Ko Ko Kyaw,
Shuming Chen,
Xiaowei Sun,
Kai Wang,
Rui Chen,
Guichuan Xing

Affiliations

Xuanchi Yu: Institute of Applied Physics and Materials Engineering, University of Macau
Jia Guo: Institute of Applied Physics and Materials Engineering, University of Macau
Yulin Mao: Institute of Applied Physics and Materials Engineering, University of Macau
Chengwei Shan: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Fengshou Tian: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Bingheng Meng: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Zhaojin Wang: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Tianqi Zhang: Institute of Applied Physics and Materials Engineering, University of Macau
Aung Ko Ko Kyaw: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Shuming Chen: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Xiaowei Sun: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Kai Wang: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Rui Chen: Department of Electrical and Electronic Engineering, Southern University of Science and Technology
Guichuan Xing: Institute of Applied Physics and Materials Engineering, University of Macau

DOI: https://doi.org/10.1007/s40820-024-01405-5
Journal volume & issue: Vol. 16, no. 1
pp. 1 – 13

Abstract

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Highlights Synergistic passivation mechanism of the dual functional compound of potassium bromide for metal halide perovskite films, that is through chemical bonding and physical screening towards the various types of defects. Metal-ion additives can simultaneously passivate the defects of halide vacancies with bromine anions and dangling bond defects with metal cations. Achieve the maximum external quantum efficiency of ~21% and maximum luminance of ~60,000 cd m−2.

Published in Nano-Micro Letters

ISSN: 2311-6706 (Print); 2150-5551 (Online)
Publisher: SpringerOpen
Country of publisher: Germany
LCC subjects: Technology
Website: http://www.springer.com/40820

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