Metal halide perovskites, as newly emerging light emitters, have been attracting considerable attention on luminescent materials and devices, due to their superior optoelectronic properties and potential practical applications. Recently, perovskite light-emitting diodes (PeLEDs) based on lead halide perovskites (LHPs) have been largely designed and intensively studied in laboratory platforms. However, to satisfy demand and promote their commercialization, it is crucial to improve the efficiency and stability of PeLEDs. Accordingly, the surface-plasmon (SP) effect provides a promising approach to enhance their luminescence, which is realized by incorporating plasmonic metal nanostructures (NSs) into PeLEDs. This review presents a comprehensive overview of the research status and prospect on LHP-based plasmonic PeLEDs together with the corresponding perovskite light-emission films (PeLEFs). Firstly, the recent development of the PeLEDs is briefly introduced. Secondly, the mechanisms and photophysics of the PeLEDs by SP manipulation are simply illustrated and analyzed. Then, the recent progress and achievements on the theoretical and experimental results of SP effect applications in the PeLEDs together with PeLEFs are presented in detail and systematically reviewed. Next, the current challenges and future directions of the PeLEDs are shown and discussed. Finally, a critical summary and outlook of the PeLEDs are summarized and proposed. Our results indicate that this new class of LHP-based plasmonic PeLEDs presents future research fields and demonstrates promising applications in lighting and displays, and further luminescence enhancement in exciton radiation processes and light extraction techniques are a hopeful route to obtain high-performance PeLEDs.

中文翻译：

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具有等离子体金属纳米结构的卤化铅钙钛矿发光二极管的发光增强

金属卤化物钙钛矿作为新兴的发光体，由于其优越的光电性能和潜在的实际应用，在发光材料和器件方面引起了相当大的关注。最近，基于卤化铅钙钛矿 (LHP) 的钙钛矿发光二极管 (PeLED) 已在实验室平台上得到大量设计和深入研究。然而，为了满足需求并促进其商业化，提高 PeLED 的效率和稳定性至关重要。因此，表面等离子体 (SP) 效应提供了一种有前景的方法来增强它们的发光，这是通过将等离子体金属纳米结构 (NS) 结合到 PeLED 中来实现的。本综述全面概述了基于 LHP 的等离子体 PeLED 以及相应的钙钛矿发光薄膜 (PeLEF) 的研究现状和前景。首先，简要介绍了PeLEDs的最新发展。其次，简单地说明和分析了通过 SP 操纵的 PeLED 的机制和光物理。然后，详细介绍并系统地回顾了近年来在 PeLED 和 PeLEF 中 SP 效应应用的理论和实验结果的进展和成果。接下来，展示和讨论了 PeLED 的当前挑战和未来方向。最后，总结并提出了 PeLED 的重要总结和展望。