AC-driven EL devices have always been the focus of attention because of their great value in the field of intelligent lighting and multifunctional display. AC-driven EL devices based on various materials and optimization methods have been continuously developed. However, the important luminescent semiconductor materials have rarely been systematically studied. Herein, the development of efficient and stable organic and perovskite EL devices, including the optimization of light-emitting materials, and the device structures are comprehensively studied. The different frequency-dependent characteristics of AC-driven EL devices based on organic semiconductors and perovskite semiconductors are mainly introduced due to the discrepancy in the characteristics of the materials themselves. In addition, approaches to reduce the driving voltage and enhance the luminescence performance of AC-driven organic EL devices are also presented. For AC-driven perovskite EL devices, the bias voltage with frequent switching of the electric field direction can alleviate the thermal degradation and charge accumulation of the material to improve the stability of the devices and also effectively suppress the phenomenon of ion migration. The unique advantages of the AC driving mode in the realization of color tunable EL devices are revealed. The application potential and challenges of AC-driven EL devices are discussed.

中文翻译：

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交流驱动有机和钙钛矿电致发光器件的最新进展

交流驱动的EL器件因其在智能照明和多功能显示领域的巨大价值，一直是人们关注的焦点。不断开发基于各种材料和优化方法的交流驱动 EL 器件。然而，重要的发光半导体材料很少被系统地研究。在此，全面研究了高效稳定的有机和钙钛矿EL器件的开发，包括发光材料的优化，以及器件结构。主要介绍基于有机半导体和钙钛矿半导体的交流驱动EL器件的不同频率相关特性，这是由于材料本身特性的差异。此外，还提出了降低驱动电压和提高交流驱动有机EL器件发光性能的方法。对于交流驱动的钙钛矿EL器件，频繁切换电场方向的偏置电压可以缓解材料的热降解和电荷积累，从而提高器件的稳定性，同时有效抑制离子迁移现象。揭示了交流驱动方式在实现可调谐EL器件方面的独特优势。讨论了交流驱动 EL 器件的应用潜力和挑战。频繁切换电场方向的偏置电压可以缓解材料的热降解和电荷积累，提高器件的稳定性，同时有效抑制离子迁移现象。揭示了交流驱动方式在实现可调谐EL器件方面的独特优势。讨论了交流驱动 EL 器件的应用潜力和挑战。频繁切换电场方向的偏置电压可以缓解材料的热降解和电荷积累，提高器件的稳定性，同时有效抑制离子迁移现象。揭示了交流驱动方式在实现可调谐EL器件方面的独特优势。讨论了交流驱动 EL 器件的应用潜力和挑战。