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Recent Progress on Light-Emitting Electrochemical Cells with Nonpolymeric Materials

机译:具有非聚合材料发光电化学电池的最新进展

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Light-emitting electrochemical cells (LECs) have emerged as some of the simplest light-emitting devices. Indeed, numerous LECs have been produced using fluorescent polymers; however, initial LEC structures require a mixture of polymers and electrolytes, thus strictly limiting their applicability. In contrast, recent advances in device technologies and material synthesis have opened a route for LECs using nonpolymeric materials. This progress report focuses on current developments in the device concepts, mechanisms, and characteristics of LECs that allow the utilization of nonpolymeric materials. First, the three primary device types, namely, electrochemically doped, ionic-material, and electrostatically doped LECs, are categorized, and their distinct features are described. Second, electrochemically doped LECs based on small molecules and branched molecules are introduced. Then, an overview of the rapidly growing field of ionic-material LECs, especially ionic transition metal complexes, ionic small molecules and perovskites, and their characteristics are provided. Following these results, recent achievements in solid-state materials, such as inorganic single crystals, quantum dots, and 2D materials, as electrostatically doped LECs are highlighted. Finally, an overview and evaluation of these LECs reveal the key directions and remaining issues that must be overcome to further functionalize LECs, which provide a versatile approach for new lighting applications comprising emergent materials.
机译:发光电化学电池(LECs)被出现为一些最简单的发光器件。实际上,使用荧光聚合物生产了许多LEC;然而,初始LEC结构需要聚合物和电解质的混合物,从而严格限制了它们的适用性。相反,器件技术和材料合成的最近进步已经使用非聚合材料开辟了LEC的途径。此进度报告侧重于允许利用非聚物材料的LECS概念,机制和特性的当前发展。首先,将三种主要器件类型,即电化学掺杂,离子材料和静电LEC分类,并描述了它们的不同特征。其次,引入了基于小分子和支链分子的电化学掺杂的LECs。然后,提供了离子材料LECs的快速生长领域,特别是离子过渡金属络合物,离子小分子和钙锌矿及其特征的概述。以下结果,突出了最近固态材料的近期成果,例如无机单晶,量子点和2D材料,作为静电掺杂的LEC。最后,对这些LEC的概述和评估揭示了必须克服的关键方向和剩余问题,以进一步稳定的LEC,这为包括紧急材料的新照明应用提供了一种多功能的方法。

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