蓝光ZnSeTe量子点的可控制备及其量子点发光二极管器件研究进展

doi:10.15541/jim20260115

摘要/Abstract

摘要： 胶体量子点因其发射波长可调、色纯度高及溶液可加工性等独特优势,成为光电器件领域理想的发光材料。量子点发光二极管（QLED）作为有机发光二极管的重要补充技术,在显示领域展现出良好的应用前景。然而,传统镉/铅（Cd/Pb）基量子点存在毒性问题,推动了无重金属量子点体系的发展。当前,无重金属蓝光QLED在器件效率与稳定性方面仍显著落后于红、绿光器件,成为制约其应用的关键瓶颈。针对这一问题,ZnSeTe量子点因其可调带隙及优异的蓝光发射特性受到广泛关注。本文围绕ZnSeTe量子点展开综述,首先介绍了其成核与生长机制及典型合成方法,并重点分析了影响其光学性能的关键因素。在此基础上,系统总结了多种性能优化策略,包括能带工程、表面刻蚀、壳层钝化以及配体调控等。接着,简要阐述了QLED的电致发光机制,并总结了ZnSeTe量子点在蓝光器件中的最新研究进展。最后,针对当前存在的发光效率低、器件寿命短及电荷注入不平衡等问题,对未来发展方向进行了展望。

关键词: 蓝光量子点, 量子点发光二极管, ZnSeTe, 核壳工程, 配体工程, 综述

Abstract: Colloidal quantum dots (QDs) are promising emissive materials for optoelectronic devices owing to their tunable emission wavelength, high color purity, and solution processability. Quantum dot light-emitting diodes (QLEDs), an important complementary technology to organic light-emitting diodes, have demonstrated considerable potential in display applications. However, the inherent toxicity of conventional Cd- and Pb-based QDs has driven the development of heavy-metal-free QD systems. Currently, heavy-metal-free blue QLEDs still lag significantly behind their red and green counterparts in device efficiency and operational stability, representing a critical bottleneck to their practical application. To address this issue, ZnSeTe QDs have attracted significant research interest due to their tunable bandgap and excellent blue emission properties. In this work, a comprehensive review of ZnSeTe QDs is provided. Firstly, their nucleation and growth mechanisms, as well as typical synthesis methods are introduced, and the key factors affecting their optical properties are discussed. On this basis, various performance optimization strategies, including band engineering, surface etching, shell passivation, and ligand regulation are systematically summarized. Furthermore, electroluminescence mechanisms of QLEDs and recent progress on the application of ZnSeTe QDs in blue-emitting devices are reviewed. Finally, the current challenges, such as low emission efficiency, limited device lifetime, and charge injection imbalance are discussed, and potential future development directions are proposed.

Key words: blue quantum dot, quantum dot light-emitting diode, ZnSeTe, core-shell engineering, ligand engineering, review

中图分类号:

TQ174

费文龙, 王亚坤, 廖良生. 蓝光ZnSeTe量子点的可控制备及其量子点发光二极管器件研究进展[J]. 无机材料学报, DOI: 10.15541/jim20260115.

FEI Wenlong, WANG Yakun, LIAO Liangsheng. Controllable Synthesis of Blue-emitting ZnSeTe Quantum Dots and Research Progress on Quantum-dot Light-emitting Diode Device[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20260115.

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