Solvent polishing engineering for quasi-two-dimensional perovskite blue light-emitting diodes

Yuting Xu; Lanlan Zhai; Lijuan Sun; Jingjing Wang; Xingxing Tan; He Huang; Yingyu Wang; Guanghong Yang; Kemin Jiang; Yun Yang; Lijie Zhang; Zhan’ao Tan; Chao Zou

doi:10.1039/D2CC02268K

Solvent polishing engineering for quasi-two-dimensional perovskite blue light-emitting diodes†

Yuting Xu,^a Lanlan Zhai,

*^a Lijuan Sun,^a Jingjing Wang,^a Xingxing Tan,^a He Huang,

*^a Yingyu Wang,^a Guanghong Yang,^a Kemin Jiang,^b Yun Yang,

^a Lijie Zhang,

^a Zhan’ao Tan

^c and Chao Zou

*^a

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* Corresponding authors

^a College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
E-mail: zhaill@wzu.edu.cn, huanghe@wzu.edu.cn, zouchao@wzu.edu.cn

^b Center for Analysis and Measurements, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China

^c Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Abstract

Solvent polishing engineering is adopted to remove the relatively loose defect layer without damaging carrier injection in blue perovskite light-emitting-diodes (PeLEDs). Synchronously, the polishing effects depending on the solvents are discussed in detail. Finally, optimized blue PeLEDs were obtained with a maximum external quantum efficiency of 5.18%, high brightness of 3737 cd m⁻², and a low turn-on voltage of 3.2 V.

This article is part of the themed collection: Chemical Communications HOT Articles 2022

Chemical Communications

Solvent polishing engineering for quasi-two-dimensional perovskite blue light-emitting diodes†

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Solvent polishing engineering for quasi-two-dimensional perovskite blue light-emitting diodes

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