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Small Molecules in Light-Emitting Electrochemical Cells: Promising Light-Emitting Materials

机译：发光电化学电池中的小分子：有前途的发光材料

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摘要

Light-emitting electrochemical cells (LECs) are solid-state lighting devices that convert electric current to light within electroluminescent organic semiconductors, and these devices have recently attracted significant attention. Introduced in 1995, LECs are considered a great breakthrough in the field of light-emitting devices for their applications in scalable and adaptable fabrication processes aimed at producing cost-efficient devices. Since then, LECs have evolved through the discovery of new suitable emitters, understanding the working mechanism of devices, and the development of various fabrication methods. LECs are best known for their simple architecture and easy, low-cost fabrication techniques. The key feature of their fabrication is the use of air stable electrodes and a single active layer consisting of mobile ions that enable efficient charge injection and transport processes within LEC devices. More importantly, LEC devices can be operated at low voltages with high efficiencies, contributing to their widespread interest. This review provides a general overview of the development of LECs and discusses how small molecules can be utilized in LEC applications by overcoming the use of traditional lighting materials like polymers and ionic transition metal complexes. The achievements of each study concerning small molecule LECs are discussed.
机译：发光电化学电池（LECs）是固态照明装置，其将电流转换为光内的电致发光有机半导体内的光，这些装置最近引起了显着的关注。 1995年介绍，LECS被认为是在可伸缩和适应性的制造工艺中的应用领域的发光装置领域的突破，旨在生产成本效益的装置。从那时起，LECS已经通过发现新合适的发射器而发展，了解设备的工作机制，以及各种制造方法的开发。 LECS最闻名于它们的简单架构和简单，低成本的制造技术。它们的制造的关键特征是使用空气稳定电极和由移动离子组成的单个有源层，其能够在LEC器件内能够有效的电荷注入和运输过程。更重要的是，LEC设备可以在具有高效率的低电压下操作，有助于其广泛的兴趣。该审查提供了LEC的开发的一般性概述，并讨论了通过克服使用传统的照明材料如聚合物和离子过渡金属配合物的使用，可以在LEC应用中使用小分子。讨论了关于小分子LECs的每项研究的成就。

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