Toward Full-Color Electroluminescent Quantum Dot Displays,Nano Letters

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Toward Full-Color Electroluminescent Quantum Dot Displays
Nano Letters ( IF 9.6 ) Pub Date : 2020-12-01 , DOI: 10.1021/acs.nanolett.0c03939
Jiwoong Yang ₁ , Moon Kee Choi ₂ , U Jeong Yang ₂ , Seo Young Kim ₁ , Young Seong Kim _{3,

4} , Jeong Hyun Kim _{3,

4} , Dae-Hyeong Kim _{3,

4} , Taeghwan Hyeon _{3,

4}

Affiliation

Colloidal quantum dots (QDs) exhibit unique characteristics such as facile color tunability, pure color emission with extremely narrow bandwidths, high luminescence efficiency, and high photostability. In addition, quantum dot light-emitting diodes (QLEDs) feature bright electroluminescence, low turn-on voltage, and ultrathin form factor, making them a promising candidate for next-generation displays. To achieve the overarching goal of the full-color display based on the electroluminescence of QDs, however it is essential to enhance the performance of QLEDs further for each color (e.g., red, green, and blue; RGB) and develop novel techniques for patterning RGB QD pixels without cross-contamination. Here, we present state-of-the-art material, process, and device technologies for full-color QLED-based displays. First, we highlight recent advances in the development of efficient red-, green-, and blue-monochromatic QLEDs. In particular, we focus on the progress of heavy-metal-free QLEDs. Then, we describe patterning techniques for individual RGB QDs to fabricate pixelated displays. Finally, we briefly summarize applications of such QLEDs, presenting the possibility of full-color QLED-based displays.

中文翻译：

迈向全彩电致发光量子点显示器

胶体量子点（QD）表现出独特的特性，例如，色彩可调性好，带宽极窄的纯色发射，高发光效率和高光稳定性。此外，量子点发光二极管（QLED）具有明亮的电致发光，低导通电压和超薄外形，使其成为下一代显示器的有希望的候选者。为了实现基于QD的电致发光的全色显示器的总体目标，但是必须进一步提高每种颜色（例如，红色，绿色和蓝色； RGB）的QLED的性能，并开发新颖的图案化技术RGB QD像素，无交叉污染。在这里，我们介绍了用于基于全彩QLED的显示器的最新材料，工艺和设备技术。第一，我们重点介绍了高效的红色，绿色和蓝色单色QLED的开发最新进展。特别是，我们关注无重金属QLED的进展。然后，我们描述了用于各个RGB QD的图案化技术，以制造像素化显示器。最后，我们简要概述了此类QLED的应用，提出了基于全色QLED的显示器的可能性。

更新日期：2021-01-13

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