DataVXACS Energy LettersPaper
journal article·2025-08-08

Simultaneous Interfacial Modification and Crystallization Regulation for High-Performance Pure-Blue Quasi-2D Perovskite Light-Emitting Diodes

Chao Shen, Heyong Wang, Xiangfei Liang, Hongting Chen, Bo Cai, Yaoqi Wei, Shiqi Hu, Yunhan Luo, Fengyun Zhang, Qinyuan Xu, Lintao Hou, Jibin Zhang

ACS Energy Letters· Volume 10· Issue 8
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Source abstract

Abstract

Quasi-2D perovskites have been recognized as promising candidates for light-emitting diode (PeLEDs) owing to their great optoelectronic properties and solution-processability. However, the disordered initial growth of the perovskites leads to phase disproportionation and defect formation in the perovskite film, which are detrimental to both stability and performance of the pure-blue PeLEDs. Herein, 4-methylbenzenesulfonate (EATsO) is designed as a buried interface to manage the crystallization process of quasi-2D perovskite films. The findings indicate that the strong interaction between EATsO and the precursors facilitates a well-ordered phase arrangement and reduces surface defects in quasi-2D perovskites, thereby enhancing the energy transfer within the perovskite films. Moreover, EATsO tunes the energy level alignment at the interface, which facilitates efficient hole injection and boosts radiative recombination in the PeLEDs. Benefiting from these improvements, the fabricated pure-blue PeLEDs (emitting at 468 nm) achieve a peak external quantum efficiency of 17.4% and a maximum luminance of 2346 cd m –2 .
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · ZnO doping and properties · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Intelligent Materials and New Energy

Yuzhang Normal University

College of Physics and Optoelectronic Engineering

Jinan University

Center for Nano Science and Technology @PoliMi Istituto Italiano di Tecnologia

Department of Electrical Engineering and Information Systems, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

State Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials

Nanjing University of Posts & Telecommunications

Key Laboratory of Materials Physics of Ministry of Education, School of Physics

Zhengzhou University

Funding

Natural Science Foundation of Henan Province · Key Scientific Research Project of Colleges and Universities in Henan Province · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Key Laboratory of Optoelectronic Chemical Materials and Devices · Young Talent Support Project of Henan Province

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