Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China.
Center for Chemistry of High-Performance & Novel Materials, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China.
Adv Mater. 2017 Apr;29(14). doi: 10.1002/adma.201607022. Epub 2017 Mar 3.
Quantum dots are a unique class of emitters with size-tunable emission wavelengths, saturated emission colors, near-unity luminance efficiency, inherent photo- and thermal- stability and excellent solution processability. Quantum dots have been used as down-converters for back-lighting in liquid-crystal displays to improve color gamut, leading to the booming of quantum-dot televisions in consumer market. In the past few years, efficiency and lifetime of electroluminescence devices based on quantum dots achieved tremendous progress. These encouraging facts foreshadow the commercialization of quantum-dot light-emitting diodes (QLEDs), which promises an unprecedented generation of cost-effective, large-area, energy-saving, wide-color-gamut, ultra-thin and flexible displays. Here we provide a Progress Report, covering interdisciplinary aspects including material chemistry of quantum dots and charge-transporting layers, optimization and mechanism studies of prototype devices and processing techniques to produce large-area and high-resolution red-green-blue pixel arrays. We also identify a few key challenges facing the development of active-matrix QLED displays.
量子点是一类独特的发射器，具有可调发射波长、饱和发射颜色、接近 1 的亮度效率、固有光稳定性和热稳定性以及出色的溶液加工性能。量子点已被用作液晶显示器的背光源中的下转换材料，以提高色域，从而推动了量子点电视在消费市场的繁荣。在过去的几年中，基于量子点的电致发光器件的效率和寿命取得了巨大的进展。这些令人鼓舞的事实预示着量子点发光二极管 (QLED) 的商业化即将到来，这将带来前所未有的成本效益、大面积、节能、宽色域、超薄和柔性显示技术。在这里，我们提供了一份进展报告，涵盖了包括量子点和电荷传输层的材料化学、原型器件的优化和机制研究以及生产大面积和高分辨率红绿蓝像素阵列的加工技术等跨学科方面。我们还确定了主动矩阵 QLED 显示器发展面临的几个关键挑战。
