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Abstract: perovskite light-emitting diodes (PeLEDs) have shown outstanding potential in next-generation lighting and display owing to the advantages of broad spectral tunability, excellent color purity, high photoluminescence quantum yields (PLQYs), and low processing cost. Device efficiency and stability are crucial indicators to evaluate whether a PeLED can meet commercial application requirements. In this review, we first discuss strategies for achieving high external quantum efficiencies (EQEs), including controlling charge injection and balance, enhancing radiative recombination, and improving light outcoupling efficiency. Next, we review recent advances in operational stability of PeLEDs and emphasize the mechanisms of degradation in PeLEDs, including ion migration, structural transformations, chemical interactions, and thermal degradation. Through detailed analysis and discussion, this review aims to facilitate progress and innovation in highly efficient and stable PeLEDs, which have significant promise for display and solid-state lighting technologies, as well as other emerging applications.

高效稳定的钙钛矿发光二极管

作者：顾卓玥^1,2，张夙彗^1,2，熊文涛^1,2，赵保丹^1,2，狄大卫^1,2,3
机构：¹浙江大学，光电科学与工程学院，极端光学技术与仪器全国重点实验室，中国杭州，310027；²浙江大学，先进光子学国际研究中心，中国杭州，310027；³浙江大学，浙江大学-伊利诺伊大学厄巴纳香槟校区联合学院，中国嘉兴，314400
概要：钙钛矿发光二极管（PeLED）凭借其光谱可调范围广、色纯度优异、效率高以及制备成本低等优势，在下一代照明和显示领域展现出巨大潜力。器件效率和稳定性是评估钙钛矿发光二极管能否满足商业应用需求的关键指标。本综述首先探讨了实现高外量子效率（EQE）的策略，包括控制载流子注入与平衡、增强辐射复合以及提高光提取效率。然后，概述了钙钛矿发光二极管工作稳定性的最新研究进展，并重点阐述了其降解机制，包括离子迁移、结构转变、化学相互作用和热降解。通过详细的分析与讨论，本综述旨在推动高效且稳定的钙钛矿发光二极管的发展与创新，展现其在显示技术、固态照明以及其他新兴应用领域的重要的应用前景。

关键词：钙钛矿；发光二极管；外量子效率；稳定性

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