DataVXAdvanced Functional MaterialsPaper
journal article·2023-12Open access

Interfacial Molecule Control Enables Efficient Perovskite Light‐Emitting Diodes

Yong‐Chun Ye, Yang Shen, Wei Zhou, Shi‐Chi Feng, Jiang‐Ying Wang, Yan‐Qing Li, Jian‐Xin Tang

Advanced Functional Materials· Volume 33· Issue 52
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Source abstract

Abstract

Abstract Perovskite light‐emitting diodes (PeLEDs) are emerging as promising candidates for new‐generation high‐definition displays with excellent color purity and low power consumption. Nevertheless, the massive defects at grain boundaries and severe interfacial exciton quenching are critical challenges that hinder the commercialization process of PeLEDs. Herein, a novel and feasible strategy of interfacial molecule control is demonstrated by employing a bifunctional material with abundant phosphine oxide groups to induce strong interaction and exciton management between the perovskite and electron‐transport layers (ETLs). This modification layer is capable of passivating the surface crystal defects and blocking the interfacial exciton transfer simultaneously, contributing to minimized energy loss at the interface. Consequently, the modified PeLEDs with green (at 513 nm), blue (at 488 nm), and red (at 666 nm) emissions achieve maximum external quantum efficiencies of 18.8%, 12.6%, and 12.3%, respectively. This study reveals the importance of interfacial molecule control for reducing the energy loss in PeLEDs.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Organic Light-Emitting Diodes Research

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

Affiliations

Macao Institute of Materials Science and Engineering (MIMSE) Faculty of Innovation Engineering Macau University of Science and Technology Taipa Macao 999078 China

College of Materials and Chemistry China Jiliang University Hangzhou Zhejiang 310018 China

Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Soochow University Suzhou Jiangsu 215123 China

School of Physics and Electronic Science East China Normal University Shanghai 200062 China

Funding

National Basic Research Program of China · National Natural Science Foundation of China · Jiangsu Provincial Department of Science and Technology · Science and Technology Innovation Plan Of Shanghai Science and Technology Commission · Natural Science Foundation of Zhejiang Province · Fundo para o Desenvolvimento das Ciências e da Tecnologia

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