Quantum-Dot Light-Emitting Diodes for Large-Area Displays: Towards the Dawn of Commercialization
Quantum-Dot Light-Emitting Diodes for Large-Area Displays: Towards the Dawn of Commercialization
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用于大面积显示器的量子点发光二极管：迈向商业化的黎明
DOI：
10.1002/adma.201607022
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发表时间：
2017-04-11
影响因子：
29.4
通讯作者：
Jin, Yizheng
中科院分区：
文献类型：
--
作者：
Dai, Xingliang;Deng, Yunzhou;Jin, Yizheng
量子点是一类独特的发光体，具有尺寸可调的发射波长、饱和的发射颜色、接近统一的发光效率、固有的光和热稳定性以及优异的溶液可加工性。量子点已被用作液晶显示器中背光的下变频器以改善色域，导致量子点电视在消费市场上蓬勃发展。近年来，基于量子点的电致发光器件的效率和寿命都取得了巨大的进步。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，它有望产生前所未有的高性价比、大面积、节能、宽色域、超薄和柔性显示器。在这里，我们提供了一份进展报告，涵盖了跨学科的方面，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理研究，以及生产大面积和高分辨率红-绿-蓝像素阵列的加工技术。我们还确定了几个关键的挑战，面临着发展的有源矩阵QLED显示器。
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.