Printing of flexible light emitting devices: A review on different technologies and devices, printing technologies and state-of-the-art applications and future prospects

Verboven I; Deferme W.

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Printing of flexible light emitting devices: A review on different technologies and devices, printing technologies and state-of-the-art applications and future prospects

机译：印刷灵活的发光器件：关于不同技术和设备，印刷技术和最先进的应用和未来前景的综述

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The primary purposes of lighting remain visibility and safety, but our quality of life can be improved by creating a complete visual environment that includes needs like health and communication. Therefore, it is indispensable to go past rigid, planar lighting towards flexible lighting. This also implies the use of inexpensive application techniques qualified for continuous manufacturing like printing techniques. Suited to fulfil these lighting needs are the alternating current powder electroluminescent (ACPEL) device, the organic light emitting diode (OLED) and the light emitting electrochemical cell (LEC) thanks to thin flexible and printable layers. ACPEL devices can be screen printed establishing economic, simple manufacturing. Their high ACdriving voltage makes them more fitted for non-wearable applications. Well-matched for wearable lighting are OLEDs thanks to low DC-driving voltages. The high sensitivity to oxygen and water of the OLED materials however necessitates a high barrier encapsulation. Unlike OLEDs, LECs realize a balanced charge injection using mobile ions in their active layer broadening the choice in electrodes, but the improvement in lifetime is limited because of incomplete knowledge of the working mechanisms. This review gives an overview of these devices and their working principles, materials, deposition techniques, applications, state of the art and an outlook.

机译：照明的主要目的仍然是可见性和安全性，但通过创建完整的视觉环境，可以改善我们的生活质量，包括需要健康和沟通。因此，通过刚性的平面照明朝向柔性照明是不可或缺的。这还意味着使用廉价的应用技术，合格用于连续制造如印刷技术。适合满足这些照明需求是交流电流粉末电致发光（ACPEL）装置，有机发光二极管（OLED）和光发光电化学电池（LEC）由于薄的柔性和可印刷层。 ACPEL设备可以屏幕印刷建立经济，简单的制造。它们的高辅助电压使它们更适合不可穿戴应用。由于低直流驾驶电压，可穿戴照明的良好匹配是OLED。然而，OLED材料的氧气和水的高敏感性需要高屏障封装。与OLED不同，LECS在其活性层中实现平衡电荷注射，其有源层扩大电极中的选择，但由于对工作机制的不完全知识，寿命的改善是有限的。此审查概述了这些设备及其工作原理，材料，沉积技术，应用，艺术状态和前景。

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来源
《Progress in Materials Science》 |2021年第5期|100760.1-100760.31|共31页
作者
Verboven I; Deferme W.;
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作者单位

Hasselt Univ Inst Mat Res IMO Wetenschapspk 1 B-3590 Diepenbeek Belgium;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
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关键词
Flexible lighting; Printing techniques; Organic light emitting diode; Light emitting electrochemical cell; Review; Alternating current powder electroluminescent device;

机译：柔性照明;打印技术;有机发光二极管;发光电化学电池;回顾;交流电流粉末电致发光器件;

Printing of flexible light emitting devices: A review on different technologies and devices, printing technologies and state-of-the-art applications and future prospects

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