• The fundamental structure, photophysical and electrical properties of 2D perovskite films were illustrated systematically.

• The advantages and challenges of 2D perovskite light-emitting diodes (PeLED) have been also discussed, which may benefit the audient to get insight into the 2D perovskite materials as well as the resultant LED devices.

• An outlook on further improving the efficiency of pure-blue PeLEDs, enhancing the operational stability of PeLEDs and reducing the toxicity to push this field forward was also provided.

中文翻译：

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二维有机-无机杂化钙钛矿高性能发光二极管的进展和挑战

• 
  系统地阐述了二维钙钛矿薄膜的基本结构、光物理和电学性能。

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  还讨论了 2D 钙钛矿发光二极管 (PeLED) 的优点和挑战，这可能有利于观众深入了解 2D 钙钛矿材料以及由此产生的 LED 器件。

• 
  还对进一步提高纯蓝色PeLED的效率、增强PeLED的运行稳定性和降低毒性以推动该领域的发展提出了展望。