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Light-Emitting Electrochemical Cells Based on Color- Tunable Inorganic Colloidal Quantum Dots

机译：基于颜色可调无机胶体量子点的发光电化学电池

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摘要

Large-area, ultrathin light-emitting devices currently inspire architects and interior and automotive designers all over the world. Light-emitting electrochemical cells (LECs) and quantum dot light-emitting diodes (QD-LEDs) belong to the most promising next-generation device concepts for future flexible and large-area lighting technologies. Both concepts incorporate solution-based fabrication techniques, which makes them attractive for low cost applications based on, for example, roll-to-roll fabrication or inkjet printing. However, both concepts have unique benefits that justify their appeal. LECs comprise ionic species in the active layer, which leads to the omission of additional organic charge injection and transport layers and reactive cathode materials, thus LECs impress with their simple device architecture. QD-LEDs impress with purity and opulence of available colors: colloidal quantum dots (QDs) are semiconducting nanocrystals that show high yield light emission, which can be easily tuned over the whole visible spectrum by material composition and size. Emerging technologies that unite the potential of both concepts (LEC and QD-LED) are covered, either by extending a typical LEC architecture with additional QDs, or by replacing the entire organic LEC emitter with QDs or perovskite nanocrystals, still keeping the easy LEC setup featured by the incorporation of mobile ions.
机译：大面积，超薄发光装置目前激发了世界各地的建筑师和室内装饰品和汽车设计师。发光电化学电池（LECs）和量子点发光二极管（QD-LED）属于最有前途的下一代设备概念，用于未来的灵活和大面积照明技术。这两个概念都采用了基于溶液的制造技术，这使得它们对于基于例如轧辊制造或喷墨印刷的低成本应用而使它们具有吸引力。然而，这两个概念都具有独特的好处，证明了他们的吸引力。 LECs包括活性层中的离子物质，这导致省略额外的有机电荷注入和输送层和反应性阴极材料，因此LECS用其简单的装置架构印象深刻。 QD-LED含有可用颜色的纯度和富裕：胶体量子点（QDS）是半导体纳米晶体，其显示出高产光发射，可以通过材料组成和尺寸容易地在整个可见光谱上调谐。通过将典型的LEC架构与附加QD扩展，或通过用QDS或Perovskite NanoCryStals替换整个有机LEC发射器来覆盖概念（LEC和QD-LED）的新兴技术，或者通过替换整个有机LEC发射器，仍然保持简单的LEC设置通过加入移动离子的集合。

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