Review: Quantum Dot Light-Emitting Diodes,Chemical Reviews

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Review: Quantum Dot Light-Emitting Diodes
Chemical Reviews ( IF 51.4 ) Pub Date : 2023-02-16 , DOI: 10.1021/acs.chemrev.2c00695
Eunjoo Jang ₁ , Hyosook Jang ₁

Affiliation

Quantum dot light-emitting diodes (QD-LEDs) are one of the most promising self-emissive displays in terms of light-emitting efficiency, wavelength tunability, and cost. Future applications using QD-LEDs can cover a range from a wide color gamut and large panel displays to augmented/virtual reality displays, wearable/flexible displays, automotive displays, and transparent displays, which demand extreme performance in terms of contrast ratio, viewing angle, response time, and power consumption. The efficiency and lifetime have been improved by tailoring the QD structures and optimizing the charge balance in charge transport layers, resulting in theoretical efficiency for unit devices. Currently, longevity and inkjet-printing fabrication of QD-LEDs are being tested for future commercialization. In this Review, we summarize significant progress in the development of QD-LEDs and describe their potential compared to other displays. Furthermore, the critical elements to determine the performance of QD-LEDs, such as emitters, hole/electron transport layers, and device structures, are discussed comprehensively, and the degradation mechanisms of the devices and the issues of the inkjet-printing process were also investigated.

中文翻译：

回顾：量子点发光二极管

就发光效率、波长可调性和成本而言，量子点发光二极管 (QD-LED) 是最有前途的自发光显示器之一。使用 QD-LED 的未来应用可以涵盖从宽色域和大面板显示器到增强/虚拟现实显示器、可穿戴/柔性显示器、汽车显示器和透明显示器的范围，这些应用在对比度、视角方面需要极端的性能、响应时间和功耗。通过定制 QD 结构和优化电荷传输层中的电荷平衡，提高了效率和寿命，从而提高了单元器件的理论效率。目前，正在测试 QD-LED 的寿命和喷墨印刷制造以用于未来的商业化。在这篇评论中，我们总结了 QD-LED 开发的重大进展，并描述了它们与其他显示器相比的潜力。此外，全面讨论了决定 QD-LED 性能的关键要素，如发射器、空穴/电子传输层和器件结构，还讨论了器件的退化机制和喷墨印刷工艺问题调查。

更新日期：2023-02-16

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